Question

Làm giùm mk từ câu 11 đến 15 thôi

Answer 1

11.

$=-a(x+t)+b(x+t)=(x+t)(-a+b)=(b-a)(x+t)$

12.

$=a(m-6)-5ab(m-6)=a(m-6)(1-5b)$

13.

$=\frac{2}{5}x(4-y)+\frac{2}{5}y(4-y)$

$=\frac{2}{5}(4-y)(x+y)$

14.

$=2m(x-y)-12m^3(x-y)$

$=2m(x-y)(1-6m^2)$

15.

$=14a^2(-x+2y)+7a(-x+2y)$

$=7a(-x+2y)(2a+1)$