Evaluate
-\frac{3}{2}=-1.5
Factor
-\frac{3}{2} = -1\frac{1}{2} = -1.5
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\frac{2}{7}\left(-\frac{20+1}{4}\right)
Multiply 5 and 4 to get 20.
\frac{2}{7}\left(-\frac{21}{4}\right)
Add 20 and 1 to get 21.
\frac{2\left(-21\right)}{7\times 4}
Multiply \frac{2}{7} times -\frac{21}{4} by multiplying numerator times numerator and denominator times denominator.
\frac{-42}{28}
Do the multiplications in the fraction \frac{2\left(-21\right)}{7\times 4}.
-\frac{3}{2}
Reduce the fraction \frac{-42}{28} to lowest terms by extracting and canceling out 14.
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{ x } ^ { 2 } - 4 x - 5 = 0
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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 ) }
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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}