(3 \times { 2.1 }^{ 2 } +5 \times 2.1
Evaluate
23.73
Factor
\frac{3 \cdot 7 \cdot 113}{2 ^ {2} \cdot 5 ^ {2}} = 23\frac{73}{100} = 23.73
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3\times 4.41+5\times 2.1
Calculate 2.1 to the power of 2 and get 4.41.
13.23+5\times 2.1
Multiply 3 and 4.41 to get 13.23.
13.23+10.5
Multiply 5 and 2.1 to get 10.5.
23.73
Add 13.23 and 10.5 to get 23.73.
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}