Question

Tìm BCNN(42,45)

Answer 1

Ta có : 42=2.3.7 ; 45=3^2.5

Suy ra BCNN(42,45)=2.3^2.5.7=630

k mình nha

Answer 2

Ta có : 42 = 2 x 3 x 7

           45 = 3^2 x 5

=> BCNN(42 ; 45 ) =  2 x 3^2 x 5 x 7 =630.

Answer 3

Ta có

42=2.3.7

45=3^2.5

=>BCNN(42,45)=630

k nhe vu

Answer 4

Ta có

42 = 2.3.7

45 = 3^2.5

=> BCNN ( 42 ; 45 ) = 2 . 3^2 . 5 . 7 = 630

Answer 5

BCNN(42;45)=630

Answer 6

42=2.3.7              45=3^3.5

BCNN(42;45)=2.3^3.5.7=630