SOLUTION: I need help with this: 3x^2+9x-30=0 Thanks

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Question 1036503: I need help with this: 3x^2+9x-30=0 Thanks
Found 2 solutions by josmiceli, MathTherapy:
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!

You can complete the square to find roots
Divide both sides by


Take 1/2 of the coefficient of the term,
square it and add to both sides




Take the square root of both sides



-------------
and, taking the negative square root of



The roots are and
---------------
Here's the plot of the given equation:
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

I need help with this: 3x^2+9x-30=0 Thanks


 ------- Factoring out GCF, 3



(x + 5)(x - 2) = 0

x + 5 = 0        OR      x - 2 = 0

 

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