Question

đa thức 25-a^2+2ab-b^2 đc phân tích thành 

Answer 1

\(=25-\left(a-b\right)^2=\left(25-a+b\right)\left(25+a-b\right)\)

Answer 2

\(25-a^2+2ab-b^2\)

\(=25-\left(a^2-2ab+b^2\right)=25-\left(a-b\right)^2\)

\(=\left(5-a+b\right)\left(5+a-b\right)\)

Answer 3

`25-a^2+2ab-b^2`

`=25-(a^2-2ab+b^2)`

`=5^2-(a-b)^2`

`=(5+a-b)(5-a+b)`

Answer 4

25 - a² + 2ab - b²

= 5² - (a - b)²

= (5 - a + b)(5 + a - b)