Question

Which of the following is a solution of x^2+5x=-2?
-2+2i√3
2+2i√3
1-i√3
-1+i√3

Answer 1

quadratic equation is
Ax^2 + Bx+C=0
so first move -2 to the left side
and then use quadratic formula

Answer 2

use the quadratic formula, do you know that?

Answer 3

I don't remember the formula

Answer 4

x = -b +/- sqrt (a^2 - 4ac) all over 2a

Answer 5

I put the wrong question to those answers. The question is x^2+2x+4

Answer 6

:)\[\huge\ x = \frac{ -b \pm \sqrt{b^2 -4ac} }{ 2a }\]

Answer 7

okay for that one just find two number
if you multiply them you should get 4 and if you add or subtract them you should get 2

Answer 8

once you plug in - A is the correct answer. I uploaded the pix also...caught I typed a^2 instead of b^2

Answer 9

no, still have to use quad formula.