Question

What is the solution to the equation?

2 x squared plus 4 equals 20
Choose all answers that are correct.

A.
− 2 square root of 2

B.
− 2 square root of 8

C.
2 square root of 2

D.
2 square root of 8

Answer 1

@egbeach

Answer 2

\[2x ^{2} +4=20\]

Answer 3

yup

Answer 4

move the 4 to the other side

Answer 5

so 2x^2=20-4

Answer 6

2x^2=16

Answer 7

how would you get ride of the 2?

Answer 8

divide both sides

Answer 9

so do that...

Answer 10

x^2=8

Answer 11

and whats the square root of 8?

Answer 12

\[2\sqrt{2}\]

Answer 13

yes

Answer 14

it says choose all answers that are correct

Answer 15

so that's one

Answer 16

@egbeach

Answer 17

when you square something what do you always end up with?

Answer 18

umm..

Answer 19

so A?

Answer 20

@egbeach

Answer 21

should be

Answer 22

okay

Answer 23

Thanks! :)