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Christian Tellnes · Answer 1 · 2016-05-05T12:48:02+0000

-10a and -8a are like terms, but -3ab is not equivalent. With the two a terms, we have:

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a(-10-8)

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We then add in the other term (-3ab) for a final result of -3ab+-18a. This can be factored alternatively as -3a(b+6).

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