Question

Equaçao do 2° RESOLVA : (3x-2)²=(2-x)²

Answer 1

(3x-2)^2=(2-x)^2
3x^2-2.3x.2+2^2=2^2-2.2.x+x^2
9x^2-12x+4=4-4x+x^2
9x^2-x^2-12x+4x+4-4
8x^2-8x=0
delta=b^2-4ac
delta=(-8)^2-4.8.0
delta=64-0
delta=64
x=-b-/+ raiz de delta/2a
x=-(-8)-8/2.8
x=8-8/16
x=0/16
x=0
x=-(-8)+8/2.8
x=8+8/16
x=16/16
x=1
S={0, 1}