SOLUTION: This is from a quiz can you help? Factor each polynominal. Show relevant work/tests. If the polynominal is prime-say so. a^2-4a=12. Thanks

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: This is from a quiz can you help? Factor each polynominal. Show relevant work/tests. If the polynominal is prime-say so. a^2-4a=12. Thanks      Log On


   

Question 154468: This is from a quiz can you help?
Factor each polynominal. Show relevant work/tests. If the polynominal is prime-say so. a^2-4a=12. Thanks
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a^2-4a=12
a^2-4a-12 = 0
(a-6)(a+2) = 0
a = 6 or a = -2
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Cheers,
Stan H.