Question

You are placing a rectangular picture on a square poster board.you can enlarge the picture to any size.The area poster board not covered by the picture is modeled by the equation A=-x^2-10x+300is it possible for the area not covered by the picture to be in 100in.

Answer 1

yes

Explanation:

So basically we have to solve 100 = -x² + 10x + 300 for x.

x² - 10x - 200 = 0

(x - 20)(x + 10) = 0

x = 20, -10