Question

Solve. 2x2 = 8
x = 2

x = 2 and x = –2

x = –2 and x = 4

x = 4

Answer 1

do you mean
\[2x ^{2}=8\]

Answer 2

x=+,-2

Answer 3

yes im sorry @MathDad72

Answer 4

that's ok you want to go through the steps to solve? or just use the answers given?

Answer 5

if you could just explain how you got your answer that would be great

Answer 6

We want to get the x by itself, correct?

Answer 7

correct!

Answer 8

how would you "move" the 2 over to the other side?

Answer 9

\[(\frac{ 1 }{ 2 }) 2x ^{2} = 8(\frac{ 1 }{ 2 })\]
Does this make sense?

Answer 10

divide?

Answer 11

correct
if you divide the left side by 2 you will get
\[x ^{2}\]

Answer 12

and
what ever you do to one side you need to do to the other (right)
\[x ^{2} = 4\]

Answer 13

still good?

Answer 14

so now to "move" the square to the other side.

Answer 15

\[\sqrt{x ^{2}} = \pm \sqrt{4}\]

Answer 16

\[x = \pm 2\]

Answer 17

Anything you want to go over in more detail? Or are you good?