Question

Solve 2x2 - 8x = -7.

Answer 1

4 - 8x = -7
-8x = -7 - 4
-8x = -11
8x = 11
x = 11/8
x = 1 3/8 or 1.375

Answer 2

these are my choices

Answer 3

1. Add 7 to both sides.
2. Plug into the quadratic formula
3. a = 2, b = -8, c = 7

Answer 4

Is the 2x squared (see below) or does it say 2 times 2?\[2x ^{2}\]

Answer 5

its 2x squared (:

Answer 6

ahhhhh... 2x^2, very different! LOL hold on

Answer 7

hahah alright (:

Answer 8

@olivia0311 What did you get when you plugged into the formula?

Answer 9

\[x=8\pm \sqrt{8} \over 4 \]

Answer 10

Yes.
\[\frac{8\pm \sqrt{8}}{4}\]

Answer 11

So divide out the 4

Answer 12

And simplify radical 8

Answer 13

\[-2\pm 2 \sqrt{2}\]

Answer 14

?

Answer 15

@Mertsj

Answer 16

\[\frac{8\pm \sqrt{8}}{4}=\frac{8\pm2\sqrt{2}}{4}=\frac{4\pm \sqrt{2}}{2}=2\pm\frac{\sqrt{2}}{2}\]

Answer 17

oh okay, I see what I did wrong, thank you so much