SOLUTION: Can you help me pls? (Y-7)(2y^2+7y-15)=0

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Question 405171: Can you help me pls?
(Y-7)(2y^2+7y-15)=0
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
%28y-7%29%282y%5E2%2B7y-15%29=0 product of two factors equals 0, when the first of them equals 0, or the second equals 0
y-7=0 or 2y%5E2%2B7y-15=0
From the first equation y=7
Find solution of the second equation
2y%5E2%2B7y-15=0
y+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
y+=+%28-7+%2B-+sqrt%28+7%5E2-4%2A2%2A%28-15%29+%29%29%2F%282%2A2%29+
y+=+%28-7+%2B13%29%2F4+ or y+=+%28-7+-13%29%2F4+
y+=+1.5+ or y+=+-5+
Answer y+=+-5+, y+=+1.5+, y=7