The 8-2x under the square root -x =0 someone help

Answer 1

again, i think i'd look at the quadratic equation.

post back if you don't know what this is and i'll give you an alternative.

Answer 2

i do know that it is the b + or - the square root of b squared -4ac over 2a but I still can't get the correct answer

Answer 3

i get -4 and 2. is that what you got?

Answer 4

Since you squared both sides of the equation while solving, any answer MUST be verified

if x = 2
left side = √(8-4) - 2
= 2-2
= 0
= right side

if x = -4
left side = √(8+8) - (-4)
= 4 + 4 = 8 which is not the right side

so x = 2 is the only solution