Evaluate
\frac{y^{2}-x^{2}}{xy}
Expand
\frac{y^{2}-x^{2}}{xy}
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\left(\frac{x}{y}+\frac{y}{y}\right)\left(\frac{y}{x}-1\right)
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{y}{y}.
\frac{x+y}{y}\left(\frac{y}{x}-1\right)
Since \frac{x}{y} and \frac{y}{y} have the same denominator, add them by adding their numerators.
\frac{x+y}{y}\left(\frac{y}{x}-\frac{x}{x}\right)
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x}{x}.
\frac{x+y}{y}\times \frac{y-x}{x}
Since \frac{y}{x} and \frac{x}{x} have the same denominator, subtract them by subtracting their numerators.
\frac{\left(x+y\right)\left(y-x\right)}{yx}
Multiply \frac{x+y}{y} times \frac{y-x}{x} by multiplying numerator times numerator and denominator times denominator.
\frac{y^{2}-x^{2}}{yx}
Consider \left(x+y\right)\left(y-x\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\left(\frac{x}{y}+\frac{y}{y}\right)\left(\frac{y}{x}-1\right)
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{y}{y}.
\frac{x+y}{y}\left(\frac{y}{x}-1\right)
Since \frac{x}{y} and \frac{y}{y} have the same denominator, add them by adding their numerators.
\frac{x+y}{y}\left(\frac{y}{x}-\frac{x}{x}\right)
To add or subtract expressions, expand them to make their denominators the same. Multiply 1 times \frac{x}{x}.
\frac{x+y}{y}\times \frac{y-x}{x}
Since \frac{y}{x} and \frac{x}{x} have the same denominator, subtract them by subtracting their numerators.
\frac{\left(x+y\right)\left(y-x\right)}{yx}
Multiply \frac{x+y}{y} times \frac{y-x}{x} by multiplying numerator times numerator and denominator times denominator.
\frac{y^{2}-x^{2}}{yx}
Consider \left(x+y\right)\left(y-x\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
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}