SOLUTION:

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Question 35348:
Answer by crunked_3000(3) About Me  (Show Source):
You can put this solution on YOUR website!
5x^2+ 24 x+ 36= 1521
Okay, bring the 1521 to the left so you knew equation would be
5x%5E2%2B24x-1485=0 Now factor it
=(5x+99)*(x-15)=0
Solve the two parts separtely
5x+99=0
5x=-99
x= -99/5......................and
x-15=0
x=15
so x equals -99/5 AND 15