Evaluate
25
Factor
5^{2}
Quiz
Arithmetic
5 problems similar to:
21 \frac { 3 } { 5 } + 31 \frac { 4 } { 5 } - 28 \frac { 2 } { 5 }
Share
Copied to clipboard
\frac{105+3}{5}+\frac{31\times 5+4}{5}-\frac{28\times 5+2}{5}
Multiply 21 and 5 to get 105.
\frac{108}{5}+\frac{31\times 5+4}{5}-\frac{28\times 5+2}{5}
Add 105 and 3 to get 108.
\frac{108}{5}+\frac{155+4}{5}-\frac{28\times 5+2}{5}
Multiply 31 and 5 to get 155.
\frac{108}{5}+\frac{159}{5}-\frac{28\times 5+2}{5}
Add 155 and 4 to get 159.
\frac{108+159}{5}-\frac{28\times 5+2}{5}
Since \frac{108}{5} and \frac{159}{5} have the same denominator, add them by adding their numerators.
\frac{267}{5}-\frac{28\times 5+2}{5}
Add 108 and 159 to get 267.
\frac{267}{5}-\frac{140+2}{5}
Multiply 28 and 5 to get 140.
\frac{267}{5}-\frac{142}{5}
Add 140 and 2 to get 142.
\frac{267-142}{5}
Since \frac{267}{5} and \frac{142}{5} have the same denominator, subtract them by subtracting their numerators.
\frac{125}{5}
Subtract 142 from 267 to get 125.
25
Divide 125 by 5 to get 25.
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}