Question

cho a+45 ,b=204,c=126 tìm uoc chung lon nhat  (a,b,c)

Answer 1

Ta có:

\(a=45=3^2\cdot5\)

\(b=204=2^2\cdot3\cdot17\)

\(b=2\cdot3^2\cdot7\)

\(\Rightarrow\text{Ư}CLN\left(a,b,c\right)=3\)

Answer 2

a=45; b= 204; c=126. Tìm ƯCLN(a,b,c)

Ta có: 45 = 3². 5; 204 = 2² .3. 17; 126 = 2 . 3² .7

Thừa số nguyên tố chung là: 3

=> ƯCLN(a,b,c) = ƯCLN(45,204;126) = 3

Vậy ƯCLN(a,b,c) = 3