Evaluate
4\left(x+1\right)
Expand
4x+4
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4+4x+x^{2}-x^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2+x\right)^{2}.
4+4x
Combine x^{2} and -x^{2} to get 0.
4+4x+x^{2}-x^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2+x\right)^{2}.
4+4x
Combine x^{2} and -x^{2} to get 0.
Examples
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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