Toán a, Tìm UCLN (180,144) b, Tim BCNN (12,18,30) 21/11/2021 By Mackenzie a, Tìm UCLN (180,144) b, Tim BCNN (12,18,30)
Đáp án: ƯCLN(180,144) là: 36 180=2^2 x 3^3 144=2^4x 3^2 => UwCLN (180,144) =2^2 x 3^2=36 BCNN (12,18,30) là 180 vì : 12=2^2 x3 18=3^2×2 30=2x3x5 => BCNN (12,18,30) = 2^2 x 3^2 x5=180 Trả lời
a) Ta có: `180 = 2^2 . 3^3 . 5 ; 144 = 2^4 . 3^2` `=>` UCLN`(180,144) = 2^2 . 3^2 = 36` b) Ta có: `12=2^2 . 3; 18 = 2 . 3^2; 30 = 2 . 3 . 5` `=>` BCNN`(12;18;30) = 2^2 . 3^2 . 5 = 180` XIN HAY NHẤT Ạ Trả lời
Đáp án:
ƯCLN(180,144) là: 36
180=2^2 x 3^3
144=2^4x 3^2
=> UwCLN (180,144) =2^2 x 3^2=36
BCNN (12,18,30) là 180 vì :
12=2^2 x3
18=3^2×2
30=2x3x5
=> BCNN (12,18,30) = 2^2 x 3^2 x5=180
a)
Ta có: `180 = 2^2 . 3^3 . 5 ; 144 = 2^4 . 3^2`
`=>` UCLN`(180,144) = 2^2 . 3^2 = 36`
b)
Ta có: `12=2^2 . 3; 18 = 2 . 3^2; 30 = 2 . 3 . 5`
`=>` BCNN`(12;18;30) = 2^2 . 3^2 . 5 = 180`
XIN HAY NHẤT Ạ