Question

Solving quadratic equations....

Answer 1

2x^2 = 16

Answer 2

I know you want to isolate x^2

Answer 3

Okay, so how do you isolate the x^2?

Answer 4

I divided both sides by 2 and I got x^2=8

Answer 5

Right, I'm supposed to square root both sides?

Answer 6

yup.

Answer 7

For 8 I get 2.82?

Answer 8

well, you need to round to get 2.83, but so then what do you get for -8 ??

Answer 9

Wait, where did the -8 come from?

Answer 10

does it have to equal 0 ?

Answer 11

Yes @SkyBabe

Answer 12

well, -2.83^2 also equals eight. When there is a \[ plus. or. minus . sign .... \pm\] you need to do positive and negative..

Answer 13

@Annetta_Martin But this way is easier, did you learn it yet?