Evaluate
\frac{\left(4-x\right)^{2}}{4}
Expand
\frac{x^{2}}{4}-2x+4
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\frac{1}{4}x^{2}-2x+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(-\frac{1}{2}x+2\right)^{2}.
\frac{1}{4}x^{2}-2x+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(-\frac{1}{2}x+2\right)^{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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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