Question 903504: The product of some negative number and 2 less than twice that number is 220. Find the number. Answer by math_pro(4) (Show Source):
You can put this solution on YOUR website! The first term is "some negative number": x
The second term is "2 less than twice that number": 2x-2
The product is 220: x*(2x-2) = 220
Divide it all by 2:
x^2 - x = 110
x^2 - x - 110 = 0
The solutions are -10 and 11 (you could use the quadratic equation or just guess and check).
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