SOLUTION: what is the answer to the question (2a+3b)(3a-3b)

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Question 139779: what is the answer to the question (2a+3b)(3a-3b)
Answer by MathLover1(20850) About Me  (Show Source):
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%282a%2B3b%29%283a-3b%29......multiply binomials
2a%2A3a+-2a%2A3b+%2B+3b%2A3a+-3b%2A3b
6a%5E2+-6ab+%2B+9ba+-9b%5E2
6a%5E2+%2B+3ba+-9b%5E2........divide all terms by 3 (simplify)
2a%5E2+%2B+ba+-+3b%5E2