SOLUTION: solve x^2+18x-4=0 simplify your answers. Use a comma to separate answers as needed. Type an exact answer, using radicals as needed. Type each solution only once.

Question 358140: solve x^2+18x-4=0 simplify your answers. Use a comma to separate answers as needed. Type an exact answer, using radicals as needed. Type each solution only once.
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!

This is a quadratic equation. After you get one side to be zero, you either factor the non-zero side or use the Quadratic Formula. Since we already have one side equal to zero and since the non-zero side cannot be factored easily, we will go straight to the Quadratic Formula, , where the "a", "b" and "c" are from . Your a=1, b=18 and c =-4. So

Simplifying:

In "long form" this is:
or
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