Question

solve the equation using square roots.
2x^2 – 128 = 0

Answer 1

2x^2 + 39 = 57

this one too

Answer 2

2x^2 – 128 = 0

2*x^2 = 128

x^2 = 128/2

x^2 = 64

x = sqrt(64)

x = +64 or -64

Answer 3

2x^2=128
x^2=64
x=+-8

Answer 4

yes, my bad. i forgot to square root 64.