Question

quatro x ao quadrado - x + x = x + 3 x ao quadrado

Answer 1

4x^2-x+x=x+3x^2
4x^2-3x^2=x-x+x
x^2=x-x+x
x^2-x+x-x
x^2-x-x+x
x^2-2x+x=0
delta=b^2-4.a.c
delta=(-2)^2-4.1.1
delta=4-4
delta=0
x=-b-/+ raiz de delta / 2a
x=-(-2)-0/2.1
x=2-0/2
x=2/2
x=1