Question

Fatore :

A) 5. a - 5. c
B) 2x + 2y + ax + ay
C) x² - 100
D) x² + 20 x + 100

Answer 1

a)$5a-5c=5(a-c)$

b)$2x + 2y + ax + ay=$

$2(x+y)+a(x+y)=(2+a)(x+y)$

c)$x^{2} - 100=$$(x-10)^{2}$

d)$(x+10)^{2}=$$x^{2} + 20 x + 100$