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9 tháng 5 2022

had remembered

9 tháng 5 2022

had remembered

16 tháng 5 2020

Câu 5 nữa bạn cố gắng làm giúp mik nha ko thì mình 0 điểm á, nha iu nhìu lém

s=10; i=8

13 tháng 12 2017

\(\dfrac{1}{1-x}\)+\(\dfrac{1}{1+x}\)+\(\dfrac{2}{1+x^2}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=

=\(\dfrac{4}{1-x^4}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{8}{1-x^8}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{16}{1-x^{16}}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{32}{1-x^{32}}\)

5 tháng 12 2015

a) x =5 -13 -8 = -8-8 = -16

b) /x+1/ = 3 -1 =2 => x+1 =2 => x  =2-1 =1

                       hoặc  x +1 =-2 => x =-3

Vây x =1 ; -3

c) /x/ = 12 -8

 /x/ =4 => x =4 hoặc x =-4

1. Would you mind if I turned on the TV?

2. Would you mind consetting this composition for me?

3. Do you mind if I take a photo of your study corner?

4. Do you mind if I give some advice on your study habit?

5. Do you mind playing the tape once more?

8 tháng 8 2017

1. Do you mind if I turn on the TV?

2. Do you mind corecting this composition for me?

3. Do you mind if I take a photo of your study corner?

4. Do you mind if I give some advice on your study habit?

5. Do you mind playing the tape once more?

6. Do you mind if I borrow your dictionary?

7. Would you mind if I had a look at your homework?

8. Would you mind telling me how you learned English at school?

9. Do you mind if I use your computer for one hours?

10. Would you mind solving this math problem for me?

11 tháng 12 2022

\(=\dfrac{a+b+a-b}{a^2-b^2}+\dfrac{2a}{a^2+b^2}+\dfrac{4a^3}{a^4+b^4}+\dfrac{8a^7}{a^8+b^8}\)

\(=\dfrac{2a^3+2a^2b^2+2a^3-2ab^2}{a^4-b^4}+\dfrac{4a^3}{a^4+b^4}+\dfrac{8a^7}{a^8+b^8}\)

\(=\dfrac{4a^7+4a^3b^4+4a^7-4a^3b^4}{a^8-b^8}+\dfrac{8a^7}{a^8+b^8}\)

\(=\dfrac{8a^7}{a^8-b^8}+\dfrac{8a^7}{a^8+b^8}\)

\(=\dfrac{8a^{15}+8a^7b^8+8a^{15}-8a^7b^8}{a^{16}-b^{16}}=\dfrac{16a^{15}}{a^{16}-b^{16}}\)

20 tháng 3 2019

tội nghiệp, k ai trả lời hihahiha