SOLUTION: solve the quadratic equation 6x^2 +3x -18=0 using the quadratic formula.

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Question 433613: solve the quadratic equation 6x^2 +3x -18=0 using the quadratic formula.
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
The formula is:
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
Now plug in the numbers from 6x^2 +3x -18=0 and we get:
x+=+%28-3+%2B-+sqrt%28+3%5E2-4%2A6%2A-18+%29%29%2F%282%2A6%29+
rewrite this as:
-3+- sqrt 441/(12)
This can be rewritten as:
-3+-21/12 so the answers are:
-2 and
1 1/2
Make sense?
RJ
www.math-unlock.com