Evaluate
67
Factor
67
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16+6+6+6+11+7+7+7+1
Add 6 and 10 to get 16.
22+6+6+11+7+7+7+1
Add 16 and 6 to get 22.
28+6+11+7+7+7+1
Add 22 and 6 to get 28.
34+11+7+7+7+1
Add 28 and 6 to get 34.
45+7+7+7+1
Add 34 and 11 to get 45.
52+7+7+1
Add 45 and 7 to get 52.
59+7+1
Add 52 and 7 to get 59.
66+1
Add 59 and 7 to get 66.
67
Add 66 and 1 to get 67.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}