Tìm hai số biết ƯCLN của chúng là 5 và tích của chúng là 1050.
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8 tháng 12 2015
a) goi hai so la a ; b va a >b
vi UCLN(a,b)=18=>a=18k ; b=18q (trong do UCLN (k,q)=1 va k>q)
=>a+b=162
18k+18q =162
18(k+q)=162
k+q=9
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29 tháng 10 2016
21453
52542000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | 542454550212.100000000000000000000000000000000000000000000000000000000000000000000000000000 |
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HD
3 tháng 8 2021
Gọi hai số đã cho là a và b (a, b thuộc N, a>b)
=> ab=8748
ƯCLN(a, b)=27=> a=27k1
b=27k2
(k>q; ƯCLN(k1; k2)=1)
=> 27k1.27k2=8748
27.27.k1.k2=8748
729.k1.k2=8748
k1.k2=8748:729
k1.k2= 12
bạn tự lập bảng nhé
kết quả cuối : Vậy 2 số đã cho là: 324 và 27 hoặc 108 và 81
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