Evaluate
14
Factor
2\times 7
Quiz
Arithmetic
5 problems similar to:
\frac{ 2+2 \cdot 3+2 \cdot 4+2 \cdot 5+2 }{ \left( 2-1 \right) 2 }
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\frac{2+6+8+10+2}{\left(2-1\right)\times 2}
Multiply 2 and 3 to get 6. Multiply 2 and 4 to get 8. Multiply 2 and 5 to get 10.
\frac{8+8+10+2}{\left(2-1\right)\times 2}
Add 2 and 6 to get 8.
\frac{16+10+2}{\left(2-1\right)\times 2}
Add 8 and 8 to get 16.
\frac{26+2}{\left(2-1\right)\times 2}
Add 16 and 10 to get 26.
\frac{28}{\left(2-1\right)\times 2}
Add 26 and 2 to get 28.
\frac{28}{1\times 2}
Subtract 1 from 2 to get 1.
\frac{28}{2}
Multiply 1 and 2 to get 2.
14
Divide 28 by 2 to get 14.
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}