Question

3 (2x-1) ao quadrado - (2x + 1) (2x-1)= 2x + 1 me ajudem pfvr urgente ?

Answer 1

Boa Noite!!

$3(2x-1)^2-(2x+1)(2x-1)=2x+1$
$(6x-3)^2-(2x+1)(2x-1)=2x+1$
$36x^2-36x+9-4x^2-1=2x+1$
$32x^2-38x+8=0$

Δ=$1444-4*32*8$
Δ=$1444-1024$
Δ=$420$

$x= \frac{38+-20,49}{64}$
$x'=0,91$
$x''=0,27$

Bons estudos!!