Question

Fatore os trinômios do segundo grau:

x² +12x +32

x² -2x -15

x² -11x +18

Answer 1

Oie, Td Bom?!

I.

$= x {}^{2} + 12x + 32$

$= x {}^{2} + 8x + 4x + 32$

$= x \: . \: (x + 8) + 4(x + 8)$

$= (x + 8) \: . \: (x + 4)$

II.

$= x {}^{2} - 2x - 15$

$= x {}^{2} + 3x - 5x - 15$

$= x \: . \: (x + 3) - 5(x + 3)$

$= (x + 3) \: . \: (x - 5)$

III.

$= x {}^{2} - 11x + 18$

$= x {}^{2} - 2x - 9x + 18$

$= x \: . \: (x - 2) - 9(x - 2)$

$= (x - 2) \: . \: (x - 9)$

Att. Makaveli1996