Evaluate
-\frac{84}{25}=-3.36
Factor
-\frac{84}{25} = -3\frac{9}{25} = -3.36
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|\frac{\frac{2\left(-2\right)}{5}}{-\frac{1\times 4+1}{4}}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Express 2\left(-\frac{2}{5}\right) as a single fraction.
|\frac{\frac{-4}{5}}{-\frac{1\times 4+1}{4}}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Multiply 2 and -2 to get -4.
|\frac{-\frac{4}{5}}{-\frac{1\times 4+1}{4}}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Fraction \frac{-4}{5} can be rewritten as -\frac{4}{5} by extracting the negative sign.
|\frac{-\frac{4}{5}}{-\frac{4+1}{4}}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Multiply 1 and 4 to get 4.
|\frac{-\frac{4}{5}}{-\frac{5}{4}}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Add 4 and 1 to get 5.
|-\frac{4}{5}\left(-\frac{4}{5}\right)|-3^{2}\left(-\frac{2}{3}\right)^{2}
Divide -\frac{4}{5} by -\frac{5}{4} by multiplying -\frac{4}{5} by the reciprocal of -\frac{5}{4}.
|\frac{-4\left(-4\right)}{5\times 5}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Multiply -\frac{4}{5} times -\frac{4}{5} by multiplying numerator times numerator and denominator times denominator.
|\frac{16}{25}|-3^{2}\left(-\frac{2}{3}\right)^{2}
Do the multiplications in the fraction \frac{-4\left(-4\right)}{5\times 5}.
\frac{16}{25}-3^{2}\left(-\frac{2}{3}\right)^{2}
The absolute value of a real number a is a when a\geq 0, or -a when a<0. The absolute value of \frac{16}{25} is \frac{16}{25}.
\frac{16}{25}-9\left(-\frac{2}{3}\right)^{2}
Calculate 3 to the power of 2 and get 9.
\frac{16}{25}-9\times \frac{4}{9}
Calculate -\frac{2}{3} to the power of 2 and get \frac{4}{9}.
\frac{16}{25}-4
Cancel out 9 and 9.
\frac{16}{25}-\frac{100}{25}
Convert 4 to fraction \frac{100}{25}.
\frac{16-100}{25}
Since \frac{16}{25} and \frac{100}{25} have the same denominator, subtract them by subtracting their numerators.
-\frac{84}{25}
Subtract 100 from 16 to get -84.
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}