Evaluate
\frac{a^{4}+b^{2}}{x^{2}}
Factor
\frac{a^{4}+b^{2}}{x^{2}}
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\frac{a^{4}}{x^{2}}+\frac{b^{2}}{x^{2}}
Cancel out a^{2} in both numerator and denominator.
\frac{a^{4}+b^{2}}{x^{2}}
Since \frac{a^{4}}{x^{2}} and \frac{b^{2}}{x^{2}} have the same denominator, add them by adding their numerators.
Examples
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