Question

Solve x2 + 4x − 4 = 0.
x equals the quantity of negative 2 plus or minus square root 16 all over 2
x equals negative 4 plus or minus square root 2
x equals negative 2 plus or minus 2 square root 2
x equals the quantity of 4 plus or minus square root 18 all over 2

Answer 1

okay so you have to isolate x do you know how to do that?

Answer 2

not really

Answer 3

@scenemunster its C

Answer 4

Use the quadratic formula.\[\huge~\rm~x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Answer 5

yep ^^

Answer 6

im stuck at \[-4 \pm \sqrt{\frac{ 32 }{ 2 }}\]

Answer 7

ôkay welll to start of you have to divide the entire -4+/-srt(32) by 2 not just the 32 in the square root after that you simply simplify

Answer 8

i got c

Answer 9

Which of the following is a solution of x2 + 2x + 8?
4 + i times the square root of 7
−1 + i times the square root of 7
1 + i times the square root of 7
−4 + i times the square root of 7

Answer 10

im stuck on this one i got to \[-2\pm \sqrt{\frac{ 36 }{ 2 }}\]

Answer 11

You add 32 and 4. :D Continue.