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put this solution on YOUR website! (2x + 5)(x - 1) = 12x
The left side is factored. However there isn't a 0 on the right.
So we have to "un-factor" the left side by "foil"ing it out, get 0
on the right, then re-factor the left side.
(2x + 5)(x - 1) = 12x
2x² - 2x + 5x - 5 = 12x
2x² + 3x - 5 = 12x
Subtract 12x from both sides to get 0 on the right
2x² - 9x - 5 = 0
(x - 5)(2x + 1) = 0
Use the zero-factor property
x - 5 = 0 2x + 1 = 0
x = 5 2x = -1
x = 
Edwin
