Expand
x^{2}+13x+42
Evaluate
\left(x+6\right)\left(x+7\right)
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x^{2}+7x+6x+42
Apply the distributive property by multiplying each term of x+6 by each term of x+7.
x^{2}+13x+42
Combine 7x and 6x to get 13x.
x^{2}+7x+6x+42
Apply the distributive property by multiplying each term of x+6 by each term of x+7.
x^{2}+13x+42
Combine 7x and 6x to get 13x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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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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