SOLUTION: Solve and show steps by factoring: x^2-9x=-20

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Question 184181: Solve and show steps by factoring:
x^2-9x=-20

Answer by solver91311(24713) About Me  (Show Source):
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Add 20 to both sides:

x%5E2+-+9x+%2B+20+=+0

-5 times -4 = -9 and -5 times -4 = 20.