Question

Phân tích các đã thức sau thành nhân tử:

a) x²-6x+9

b) 4x²-4x+1

c) (2x-3)²-16

d) 9-(x-2)²

Answer 1

`a)x^2-6x+9`

`=x^2 - 2 .3x+3^2`

`=(x+3)^2`

`=(x+3)(x+3)`

`b)4x^2-4x+1`

`=(2x)^2+2.2x.1+1^2`

`=(2x+1)^2`

`=(2x+1)(2x+1)`

`#Sal_tSea`

`2` câu kia bn tự lm dc ko:")

Answer 2

c) (2x-3)²-16

\(=\left(2x-3\right)^2-4^2\)

\(=\left(2x-3-4\right)\left(2x-3+4\right)\)

d) 9-(x-2)²

\(=3^2-\left(x-2\right)^2\)

\(=\left(3-x-2\right)\left(3-x+2\right)\)