Question

Gấppp

Answer 1

2.

a. x³ - 4x² + 4x

= x(x² - 4x + 4)

= x(x - 2)²

c. 3x² + x - 4

= 3x² + 4x - 3x - 4

= x(3x + 4) - (3x + 4)

= (x - 1)(3x + 4)

Answer 2

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

b) \(x^2-y^2-6y-9=x^2-\left(y^2+6y+9\right)=x^2-\left(y+3\right)^2=\left(x-y-3\right)\left(x+y+3\right)\)

c) \(3x^2+x-4=3x\left(x-1\right)+4\left(x-1\right)=\left(x-1\right)\left(3x+4\right)\)