Simplify. Remove grouping symbols and combine like terms. A) 5[3a-2a(3a+6b)+6a^2]

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`= 5[3a-6a^2-12ab+6a^2]`

`= 5(3a-12ab)`

`= 15a-60ab`

So the answer is;

`5[3a-2a(3a+6b)+6a^2] = 15a-60ab`

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