Question

AYUDA= (x + 7)(x + 6) + 12 = (x + 5)(x + 9)

Answer 1

(x+7)(x+6)+12=(x+5)(x+9)

$x^{2}$+13x+42+12=$x^{2}$+9x+5x+45

$x^{2}$+13x+54=$x^{2}$+14x+45

$x^{2}$+54-45=$x^{2}$+14x-13x

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

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

ya nose q mas sigue losciento :<