SOLUTION: Find the minimum value of the product P of two numbers, one of which is 9 less than the twice of the other.

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Question 1000459: Find the minimum value of the product P of two numbers, one of which is 9 less than the twice of the other.
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
two numbers: (x)(2x-9) = 2x^2 - 9x

Complete the square: 2(x - 9/4)^2 -81/8

The minimum value of the product is -81/8, when the numbers are 9/4 and -9/2.