Evaluate
-\frac{7\sqrt{3}}{50}-\frac{12}{25}\approx -0.722487113
Factor
\frac{-7 \sqrt{3} - 24}{50} = -0.7224871130596427
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\frac{-24}{25\times 2}-\frac{7}{25}\times \frac{\sqrt{3}}{2}
Multiply -\frac{24}{25} times \frac{1}{2} by multiplying numerator times numerator and denominator times denominator.
\frac{-24}{50}-\frac{7}{25}\times \frac{\sqrt{3}}{2}
Do the multiplications in the fraction \frac{-24}{25\times 2}.
-\frac{12}{25}-\frac{7}{25}\times \frac{\sqrt{3}}{2}
Reduce the fraction \frac{-24}{50} to lowest terms by extracting and canceling out 2.
-\frac{12}{25}-\frac{7\sqrt{3}}{25\times 2}
Multiply \frac{7}{25} times \frac{\sqrt{3}}{2} by multiplying numerator times numerator and denominator times denominator.
-\frac{12}{25}-\frac{7\sqrt{3}}{50}
Multiply 25 and 2 to get 50.
-\frac{12\times 2}{50}-\frac{7\sqrt{3}}{50}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 25 and 50 is 50. Multiply -\frac{12}{25} times \frac{2}{2}.
\frac{-12\times 2-7\sqrt{3}}{50}
Since -\frac{12\times 2}{50} and \frac{7\sqrt{3}}{50} have the same denominator, subtract them by subtracting their numerators.
\frac{-24-7\sqrt{3}}{50}
Do the multiplications in -12\times 2-7\sqrt{3}.
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}