Perform the operations and simplify. $$-4 a^{2}(a+1)+3 a\left(a^{2}-4\right)-a^{2}(a+2)$$
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Step 1
First, we can simplify the expression inside the parentheses: $$3 a\left(a^{2}-4i\right) = 3a^3 - 12ai$$ Show more…
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