Evaluate
23
Factor
23
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20-\left(-8\right)+5-10+2-\left(6-4\right)
Add 13 and 7 to get 20.
20+8+5-10+2-\left(6-4\right)
The opposite of -8 is 8.
28+5-10+2-\left(6-4\right)
Add 20 and 8 to get 28.
33-10+2-\left(6-4\right)
Add 28 and 5 to get 33.
23+2-\left(6-4\right)
Subtract 10 from 33 to get 23.
25-\left(6-4\right)
Add 23 and 2 to get 25.
25-2
Subtract 4 from 6 to get 2.
23
Subtract 2 from 25 to get 23.
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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699 * 533
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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