Example

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

Question

$$(3 { x }^{ 2 } +9x+6)+(9 { x }^{ 3 } +3 { x }^{ 2 } -2x+5)$$

Answer

$$6*x^2+7*x+11+9*x^3$$

Solution


Remove parentheses.
\[3{x}^{2}+9x+6+9{x}^{3}+3{x}^{2}-2x+5\]
Collect like terms.
\[(3{x}^{2}+3{x}^{2})+(9x-2x)+(6+5)+9{x}^{3}\]
Simplify.
\[6{x}^{2}+7x+11+9{x}^{3}\]
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