Evaluate
\left(x^{2}-x-1\right)\left(9x^{2}-x+15\right)
Expand
9x^{4}-10x^{3}+7x^{2}-14x-15
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9x^{4}-10x^{3}+7x^{2}-14x-15
Use the distributive property to multiply 9x^{2}-x+15 by x^{2}-x-1 and combine like terms.
9x^{4}-10x^{3}+7x^{2}-14x-15
Use the distributive property to multiply 9x^{2}-x+15 by x^{2}-x-1 and combine like terms.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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