Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$12a(a+3)-6 { a }^{ 2 } =$$

Answer

$$6*a^2+36*a$$

Solution


Expand by distributing terms.
\[12{a}^{2}+36a-6{a}^{2}\]
Collect like terms.
\[(12{a}^{2}-6{a}^{2})+36a\]
Simplify.
\[6{a}^{2}+36a\]
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