math

-8a^2+5ab-12a^2-6(2a^2-4ab-10n^2)

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  1. Is the n^2 supposed to be an a^2 ?

    If so, you can combine three pairs of terms. Otherwise, two pairs.

    Just multiply each term in parentheses by 6 and combine "like" terms.

    You may also able to factor, after that.

    You should try this yourself instead of looking for a web site (including jiskha) to do it for you.

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