Evaluate
\frac{3a\left(a+3\right)}{2}
Expand
\frac{3a^{2}+9a}{2}
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\frac{3}{2}a^{2}+\frac{9}{2}a
Use the distributive property to multiply a^{2}+3a by \frac{3}{2}.
\frac{3}{2}a^{2}+\frac{9}{2}a
Use the distributive property to multiply a^{2}+3a by \frac{3}{2}.
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