SOLUTION: If f(x)=2x2+3a+5, and f(1)=-2, then a = ?

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Question 259879: If f(x)=2x2+3a+5, and f(1)=-2, then a = ?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x)=2x^2+3a+5, and f(1)=-2, then a = ?
f(1)=-2
-2=2*-1^2+3a+5
-2=2*1+3a+5
3a=-2-2-5
3a=-9
a=-9/3
a=-3 ans.