Evaluate
-30
Factor
-30
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\frac{1000\times 10^{-3}\times 15}{1-1000\times 15\times 10^{-4}}
To multiply powers of the same base, add their exponents. Add 1 and -4 to get -3.
\frac{1000\times \frac{1}{1000}\times 15}{1-1000\times 15\times 10^{-4}}
Calculate 10 to the power of -3 and get \frac{1}{1000}.
\frac{15}{1-1000\times 15\times 10^{-4}}
Multiply 1000 and \frac{1}{1000} to get 1.
\frac{15}{1-15000\times 10^{-4}}
Multiply 1000 and 15 to get 15000.
\frac{15}{1-15000\times \frac{1}{10000}}
Calculate 10 to the power of -4 and get \frac{1}{10000}.
\frac{15}{1-\frac{3}{2}}
Multiply 15000 and \frac{1}{10000} to get \frac{3}{2}.
\frac{15}{-\frac{1}{2}}
Subtract \frac{3}{2} from 1 to get -\frac{1}{2}.
15\left(-2\right)
Divide 15 by -\frac{1}{2} by multiplying 15 by the reciprocal of -\frac{1}{2}.
-30
Multiply 15 and -2 to get -30.
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}