Question

descompuneti in factori:
a) (x-2)²-4x²
b) x²+6x+9-y²

Answer 1

(x-2-2x)(x-2+2x)=(-x-2)(3x-2)
(x+3)²-y²=(x-3-y)(x+3+y)

sper ca te-am ajutat!

Answer 2

a) $x^{2} -4x+4- 4x^{2}$= x(x-4 )+(1-$x^{2}$)
b)$(x+3)^{2} - y^{2}$