SOLUTION: if f(x)=2x^3+Ax^2+8x-9 and f(2)=5, what is the value of A?

SOLUTION: if f(x)=2x^3+Ax^2+8x-9 and f(2)=5, what is the value of A?

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Question 499378: if f(x)=2x^3+Ax^2+8x-9 and f(2)=5, what is the value of A?
Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
, since f(2)=5 we have 4*A+23=5, solving this
equation we get:4*A=-18 => A=-4.5
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