Question

phân tích đa thức thành nhân tử : 
( a - b )² - ( b - a )

Answer 1

\(\left(a-b\right)^2-\left(b-a\right)\\ =\left(a-b\right)\left(a-b\right)+\left(a-b\right)\\ =\left(a-b\right)\left(a-b+1\right)\)

`HaNa☘D`

 

Answer 2

\(\left(a-b\right)^2-\left(b-a\right)\)

\(=\left(a-b\right)^2+\left(a-b\right)\)

\(=\left(a-b\right)\left(a-b+1\right)\)

Answer 3

(a-b)^2-(b-a)

=(a-b)^2+(a-b)

=(a-b)(a-b+1)