Question

1°)fatore a expressão 
a) x²-25
b)6a-6ax-x+x²

Answer 1

a) x² - 25
(x + 5) ( x - 5)

b) 6a - 6ax -x + x²
(x - 6a) (x - 1)

Answer 2

Fatore

$x^{2} -25=(x+5)(x-5)$

$6a-6ax-x+ x^{2} =$

$6a(1-x)-x(1-x)=$

$(6a-x)(1-x)$