Expand
2x^{2}+5x-14
Evaluate
\left(x-2\right)\left(x+7\right)+x^{2}
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x^{2}+5x-14+x^{2}
Use the distributive property to multiply x-2 by x+7 and combine like terms.
2x^{2}+5x-14
Combine x^{2} and x^{2} to get 2x^{2}.
x^{2}+5x-14+x^{2}
Use the distributive property to multiply x-2 by x+7 and combine like terms.
2x^{2}+5x-14
Combine x^{2} and x^{2} to get 2x^{2}.
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.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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