Evaluate
-\frac{x^{4}}{2}+7x^{2}
Expand
-\frac{x^{4}}{2}+7x^{2}
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\frac{\left(14-x^{2}\right)x^{2}}{2}
Express \frac{14-x^{2}}{2}x^{2} as a single fraction.
\frac{14x^{2}-x^{4}}{2}
Use the distributive property to multiply 14-x^{2} by x^{2}.
\frac{\left(14-x^{2}\right)x^{2}}{2}
Express \frac{14-x^{2}}{2}x^{2} as a single fraction.
\frac{14x^{2}-x^{4}}{2}
Use the distributive property to multiply 14-x^{2} by x^{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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