Question

Resolva as equações:

a)3y^2 + 1/8 = 5x^2 - 3/4 3


b) (x + 1)^2 + (x - 1)^2 = 10

obrigada ❤

Answer 1

B) (x + 1)^2 + (x - 1)^2 = 10
2x^2+2x-2x+2=10
2x^2=10-2
2x^2=8
x^2=8/2
x^2=4
x=raiz de 4
x=2;-2