How do you solve for x in this equation 20=x^2-1x

[From: ] [author: ] [Date: 12-05-27] [Hit: ]

i have this geometry hw and i really need help.

20 = x^2 - x
x^2 - x -20 = 0
Factor
(x - 5)(x + 4) = 0
x = 5
& x = -4

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