Evaluate
x^{2}+6x-42
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x^{2}+6x-42
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x^{2}-x+7\left(x-6\right)
Use the distributive property to multiply x by x-1.
x^{2}-x+7x-42
Use the distributive property to multiply 7 by x-6.
x^{2}+6x-42
Combine -x and 7x to get 6x.
x^{2}-x+7\left(x-6\right)
Use the distributive property to multiply x by x-1.
x^{2}-x+7x-42
Use the distributive property to multiply 7 by x-6.
x^{2}+6x-42
Combine -x and 7x to get 6x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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