Evaluate
4\left(a+3\right)a^{2}
Expand
4a^{3}+12a^{2}
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4\left(a+3\right)a^{2}
Multiply 2 and 2 to get 4.
\left(4a+12\right)a^{2}
Use the distributive property to multiply 4 by a+3.
4a^{3}+12a^{2}
Use the distributive property to multiply 4a+12 by a^{2}.
4\left(a+3\right)a^{2}
Multiply 2 and 2 to get 4.
\left(4a+12\right)a^{2}
Use the distributive property to multiply 4 by a+3.
4a^{3}+12a^{2}
Use the distributive property to multiply 4a+12 by a^{2}.
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