Evaluate
\frac{2b-2b^{2}+ab-a^{2}}{10ab}
Expand
-\frac{a^{2}-ab+2b^{2}-2b}{10ab}
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\frac{\left(1-b\right)\times 2b}{10ab}+\frac{\left(b-a\right)a}{10ab}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 5a and 10b is 10ab. Multiply \frac{1-b}{5a} times \frac{2b}{2b}. Multiply \frac{b-a}{10b} times \frac{a}{a}.
\frac{\left(1-b\right)\times 2b+\left(b-a\right)a}{10ab}
Since \frac{\left(1-b\right)\times 2b}{10ab} and \frac{\left(b-a\right)a}{10ab} have the same denominator, add them by adding their numerators.
\frac{2b-2b^{2}+ba-a^{2}}{10ab}
Do the multiplications in \left(1-b\right)\times 2b+\left(b-a\right)a.
\frac{\left(1-b\right)\times 2b}{10ab}+\frac{\left(b-a\right)a}{10ab}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 5a and 10b is 10ab. Multiply \frac{1-b}{5a} times \frac{2b}{2b}. Multiply \frac{b-a}{10b} times \frac{a}{a}.
\frac{\left(1-b\right)\times 2b+\left(b-a\right)a}{10ab}
Since \frac{\left(1-b\right)\times 2b}{10ab} and \frac{\left(b-a\right)a}{10ab} have the same denominator, add them by adding their numerators.
\frac{2b-2b^{2}+ba-a^{2}}{10ab}
Do the multiplications in \left(1-b\right)\times 2b+\left(b-a\right)a.
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}