Evaluate
28
Factor
2^{2}\times 7
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\frac{4\left(1-15\right)}{1-3}
Multiply 3 and 5 to get 15.
\frac{4\left(-14\right)}{1-3}
Subtract 15 from 1 to get -14.
\frac{-56}{1-3}
Multiply 4 and -14 to get -56.
\frac{-56}{-2}
Subtract 3 from 1 to get -2.
28
Divide -56 by -2 to get 28.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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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
\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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