SOLUTION: Solve Using the Quadratic Formula x(4x+18)=10

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Question 804512: Solve Using the Quadratic Formula
x(4x+18)=10
Answer by erica65404(394) About Me  (Show Source):
You can put this solution on YOUR website!
x%284x%2B18%29=10
get equation equal to 0
4x%5E2%2B18x=10
4x%5E2%2B18x-10=0
use quadratic formula
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-18+%2B-+sqrt%28+18%5E2-4%2A4%2A%28-10%29+%29%29%2F%282%2A4%29+
x=%28-18%2B-sqrt%28484%29%29%2F%288%29
x=%28-18%2B-22%29%2F8
x=%28-18%2B22%29%2F8
x=1%2F2
x=%28-18-22%29%2F8
x=-5
the values of x are 1%2F2 and -5