Factor
\frac{\left(x-2\right)\left(x+2\right)}{4}
Evaluate
\frac{x^{2}}{4}-1
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\frac{x^{2}-4}{4}
Factor out \frac{1}{4}.
\left(x-2\right)\left(x+2\right)
Consider x^{2}-4. Rewrite x^{2}-4 as x^{2}-2^{2}. The difference of squares can be factored using the rule: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
\frac{\left(x-2\right)\left(x+2\right)}{4}
Rewrite the complete factored expression.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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