Question

(x-2)ao quadrado=3x+4

Answer 1

Boa tarde, vamos lá :
$(x-2) ^{2} =3x+4$
$x^{2} -4x+4=3x+4$

$x^{2} -4x-3x=4-4$
$x^{2} -7x=0$
$x(x-7)=0$

$x=0 , x=7$

S={0,7}