Question

Which of the following is a solution of x^2+5x=-2?

5 plus or minus the square root of 33 divided by two.

5 plus or minus the square root of 17 divided by two

negative 5 plus or minus the square root of 33 divided by two

negative 5 plus or minus the square root of 17 divided by two

Answer 1

you have to use the quadratic equation. do you know how?

Answer 2

Sorta

Answer 3

well rewrite the equation as

x^2 + 5x + 2 = 0

you need the general quadratic formula

a = 1, b = 5 and c = 1

the formula is

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

hope it helps

Answer 4

oops c = 2...

Answer 5

Or you can complete the square.