SOLUTION: Solve the question by factoring. 3x^2-2x=21

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Question 1040461: Solve the question by factoring.
3x^2-2x=21
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
3x%5E2-2x-21=0

Look for the combinations you need and find which of them works. 
(3x  3)(x  7 )
diagonal terms, 3x and 21x


(3x  7)(x  3)
diagonal terms, 7x and 9x; so this should work;
just choose the proper arithmetic operations in each binomial.