Evaluate
\frac{7x^{2}}{\left(x-3\right)\left(4x+5\right)}
Factor
\frac{7x^{2}}{\left(x-3\right)\left(4x+5\right)}
Graph
Share
Copied to clipboard
\frac{x\times 7x}{\left(x-3\right)\left(4x+5\right)}
Multiply \frac{x}{x-3} times \frac{7x}{4x+5} by multiplying numerator times numerator and denominator times denominator.
\frac{x^{2}\times 7}{\left(x-3\right)\left(4x+5\right)}
Multiply x and x to get x^{2}.
\frac{x^{2}\times 7}{4x^{2}+5x-12x-15}
Apply the distributive property by multiplying each term of x-3 by each term of 4x+5.
\frac{x^{2}\times 7}{4x^{2}-7x-15}
Combine 5x and -12x to get -7x.
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}