dể ợt ta có cách làm sao
(1+1)^2 + 3^2 =3^2 + (1+1)^2 ( ^2 là bình phương nha mấy chế)
mà 1+1 =2 nên là 2^2 +3^2= 3^2 +2^2
ta cộng 2 vế cho -2*2*3 nên ta có
2^2  -2*2*3+ 3^2 = 3^2 -2*2*3 +2^2
đây là hằng đẳng thức số 2 nên ta có
(2-3)^2 = (3-2)^2
=> do bình phương bằng nhau => trong ngoặc bằng nhau
=> 2 -3 = 3-2
hay 2*2= 2*3
hay 2 = 3
mà 2 = 1+1
=> 1 + 1 = 3

Khi làm phép tính sai

Đề hơi thấy hơi có nhiều kết quả

câu trả lời chính xác iQ vô cực là đây chứ đâu ( trong ngặc kép)

? =2 nhó

Xét mỗi hàng thì tổng 2 số đứng sau là số đứng trước => ? = 2

day dau phai toan lop 1

bằng 2 chứ gì 

two là2

dạ chào oog cháu xin trả lời 1+1=....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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1 + 1 = 2

Nội qui tham gia "Giúp tôi giải toán"

1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;

2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.

3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.

Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web.

1 + 1 = 2 

~ Chú lớp 1 ạ ? !

Kết quả là 2432902008176640000. Vậy có 4 chữ số 0 đứng cuối

thanh kiu nha

Từ trang 1 đến trang 9 cần sử dụng số chữ số là:

( 9 - 1 ) : 1 + 1 = 9 ( chữ số )

Từ trang 10 đến trang 99 cần sử dụng số chữ số là:

[ ( 99 - 10 ) : 1 + 1 ] × 2 = 180 ( chữ số )

Từ trang 100 đến trang 350 cần sử dụng số chữ số là:

[ ( 350 - 100 ) : 1 + 1 ] × 3 = 753 ( chữ số )

Tổng số chữ số phải sử dụng là:

9 + 180 + 753 = 942 chữ số

Đáp số: 942 chữ số

2 giờ rưỡi = 2 giờ 30 phút = 2,5 giờ

Sau 2 giờ rưỡi xe thứ 1 đi được số ki - lô - mét là

44,5 × 2,5 = 111,25 ( km )

Sau 2 giờ rưỡi xe thứ 2 đi được số ki - lô - mét là

45,5 × 2,5 = 113,75 ( km )

Hai xe cách nhau bao xa là

250 - ( 113,75 + 111,25 ) = 25 ( km )

Đáp số : 25 km

thanks