SOLUTION: Find the value for k that will make 4x^2+6.4x +k a perfect square.

Question 158103: Find the value for k that will make 4x^2+6.4x +k a perfect square.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Find the value for k that will make 4x^2+6.4x +k a perfect square.
.
Take the coefficient 'b' and divide by 2:
3.2
.
Square the number:
10.24 (this is the value of k)
.
Therefore,
4x^2+6.4x +10.24
(2x+3.2)(2x+3.2)
(2x+3.2)^2

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