Evaluate
2\left(2x+x_{2}+1\right)
Factor
2\left(2x+x_{2}+1\right)
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2x_{2}+2x+1+2x+1
Combine x_{2} and x_{2} to get 2x_{2}.
2x_{2}+4x+1+1
Combine 2x and 2x to get 4x.
2x_{2}+4x+2
Add 1 and 1 to get 2.
4x+2x_{2}+2
Multiply and combine like terms.
2\left(2x+x_{2}+1\right)
Factor out 2.
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