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Mathematics 7 Online
OpenStudy (anonymous):

-2a[-2a(-2a+4b)+3b(-a- 6)] Simplify .

OpenStudy (anonymous):

I think you start by distributing what's inside the parentheses first, so -2a into (-2a+4b) and 3b into (-a-6), then distribute -2a into that answer.

OpenStudy (anonymous):

-2a[ 4a^2 - 6ba -3ba -18b] -8a^3 + 6ba^2 + 36ba

OpenStudy (anonymous):

it doesn't tell me anything bout 6ba^2 in my answer choices . it has 10a^2 or 22a^2

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