SOLUTION: How do you factor this equation and solve for n in the following-- n squared minus n equals 20 n=5 but I am not sure how to get the answer other than by intuition--thanks

Question 569632: How do you factor this equation and solve for n in the following--
n squared minus n equals 20
n=5 but I am not sure how to get the answer other than by intuition--thanks
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
How do you factor this equation and solve for n in the following--
n squared minus n equals 20
================================
n^2 - n = 20
n^2 - n - 20 = 0
Since -20 = -5*4 and -5 + 4 = -1, we can factor the equation as:
(n-5)(n+4) = 0
So the solutions are n=5, n=-4
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