Evaluate
9.7
Factor
\frac{97}{2 \cdot 5} = 9\frac{7}{10} = 9.7
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3+10\times 0.4+9\times 0.1+9\times 0.2
Multiply 10 and 0.3 to get 3.
3+4+9\times 0.1+9\times 0.2
Multiply 10 and 0.4 to get 4.
7+9\times 0.1+9\times 0.2
Add 3 and 4 to get 7.
7+0.9+9\times 0.2
Multiply 9 and 0.1 to get 0.9.
7.9+9\times 0.2
Add 7 and 0.9 to get 7.9.
7.9+1.8
Multiply 9 and 0.2 to get 1.8.
9.7
Add 7.9 and 1.8 to get 9.7.
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}