Question

Which of the following is a solution of x2 - 2x = -8

Answer 1

can u explain

Answer 2

Get it in form of \(ax^2+bx+c =0\), then either try to factor it, or just use quadratic formula.

Answer 3

so its x2-2x-8=0

Answer 4

well, you get it to form it need to be. now you have to find the value of x.

Answer 5

Try to factor it

Answer 6

\[x^2-2x=8\]\[x^2-2x+1=8+1\]\[(x-1)^2=9\]\[x-1=±~3\]\[x=1~±~3~~~~~~~~~~~~--->~~~~~~~~~~~x=~~4,~~~-2\]

Answer 7

The beauty of completing the square (well I skipped little steps )

Answer 8

negative 1 minus i square root of 28

1 plus i square root of 28

negative 1 minus i square root of 7

1 plus i square root of 7

Answer 9

i dont understand

Answer 10

I think these options are for other question. SolomonZelman is correct.