Question

4x²-4 = 4
Solve quadratic function with square roots

Answer 1

Hint add 4 to both sides

Answer 2

Then I get 4x²=8
Do I divide by 4 now?

Answer 3

Exactly!

Answer 4

So then x²=2
How do I square root that? Or is there no way

Answer 5

apply square root to both sides

Answer 6

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

Answer 7

And having a decimal as an answer is fine?

Answer 8

no leave it like that
so what are the answers?
they two answers

Answer 9

there are two answers

Answer 10

x=-2
x=2
?

Answer 11

not quite
they are \[x=\sqrt{2} , ~ x=-\sqrt{2}\]

Answer 12

i don't why you destroyed that square root
you needed to simplify the left side \[\sqrt{x^2}\]