Evaluate
129
Factor
3\times 43
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12+3\left(28+4\right)+2\left(3\times 3+1\right)+1
Multiply 7 and 4 to get 28.
12+3\times 32+2\left(3\times 3+1\right)+1
Add 28 and 4 to get 32.
12+96+2\left(3\times 3+1\right)+1
Multiply 3 and 32 to get 96.
108+2\left(3\times 3+1\right)+1
Add 12 and 96 to get 108.
108+2\left(9+1\right)+1
Multiply 3 and 3 to get 9.
108+2\times 10+1
Add 9 and 1 to get 10.
108+20+1
Multiply 2 and 10 to get 20.
128+1
Add 108 and 20 to get 128.
129
Add 128 and 1 to get 129.
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}