Evaluate
511
Factor
7\times 73
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384+64+32+16+8+4+2+1
Add 256 and 128 to get 384.
448+32+16+8+4+2+1
Add 384 and 64 to get 448.
480+16+8+4+2+1
Add 448 and 32 to get 480.
496+8+4+2+1
Add 480 and 16 to get 496.
504+4+2+1
Add 496 and 8 to get 504.
508+2+1
Add 504 and 4 to get 508.
510+1
Add 508 and 2 to get 510.
511
Add 510 and 1 to get 511.
Examples
Quadratic equation
{ 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}