Evaluate
\frac{3\left(28x^{2}+1\right)}{2\left(x-9\right)}
Expand
\frac{3\left(28x^{2}+1\right)}{2\left(x-9\right)}
Graph
Share
Copied to clipboard
\frac{\frac{1}{4x}+\frac{7x\times 4x}{4x}}{\frac{1}{6}-\frac{3}{2x}}
To add or subtract expressions, expand them to make their denominators the same. Multiply 7x times \frac{4x}{4x}.
\frac{\frac{1+7x\times 4x}{4x}}{\frac{1}{6}-\frac{3}{2x}}
Since \frac{1}{4x} and \frac{7x\times 4x}{4x} have the same denominator, add them by adding their numerators.
\frac{\frac{1+28x^{2}}{4x}}{\frac{1}{6}-\frac{3}{2x}}
Do the multiplications in 1+7x\times 4x.
\frac{\frac{1+28x^{2}}{4x}}{\frac{x}{6x}-\frac{3\times 3}{6x}}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 6 and 2x is 6x. Multiply \frac{1}{6} times \frac{x}{x}. Multiply \frac{3}{2x} times \frac{3}{3}.
\frac{\frac{1+28x^{2}}{4x}}{\frac{x-3\times 3}{6x}}
Since \frac{x}{6x} and \frac{3\times 3}{6x} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{1+28x^{2}}{4x}}{\frac{x-9}{6x}}
Do the multiplications in x-3\times 3.
\frac{\left(1+28x^{2}\right)\times 6x}{4x\left(x-9\right)}
Divide \frac{1+28x^{2}}{4x} by \frac{x-9}{6x} by multiplying \frac{1+28x^{2}}{4x} by the reciprocal of \frac{x-9}{6x}.
\frac{3\left(28x^{2}+1\right)}{2\left(x-9\right)}
Cancel out 2x in both numerator and denominator.
\frac{84x^{2}+3}{2\left(x-9\right)}
Use the distributive property to multiply 3 by 28x^{2}+1.
\frac{84x^{2}+3}{2x-18}
Use the distributive property to multiply 2 by x-9.
\frac{\frac{1}{4x}+\frac{7x\times 4x}{4x}}{\frac{1}{6}-\frac{3}{2x}}
To add or subtract expressions, expand them to make their denominators the same. Multiply 7x times \frac{4x}{4x}.
\frac{\frac{1+7x\times 4x}{4x}}{\frac{1}{6}-\frac{3}{2x}}
Since \frac{1}{4x} and \frac{7x\times 4x}{4x} have the same denominator, add them by adding their numerators.
\frac{\frac{1+28x^{2}}{4x}}{\frac{1}{6}-\frac{3}{2x}}
Do the multiplications in 1+7x\times 4x.
\frac{\frac{1+28x^{2}}{4x}}{\frac{x}{6x}-\frac{3\times 3}{6x}}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 6 and 2x is 6x. Multiply \frac{1}{6} times \frac{x}{x}. Multiply \frac{3}{2x} times \frac{3}{3}.
\frac{\frac{1+28x^{2}}{4x}}{\frac{x-3\times 3}{6x}}
Since \frac{x}{6x} and \frac{3\times 3}{6x} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{1+28x^{2}}{4x}}{\frac{x-9}{6x}}
Do the multiplications in x-3\times 3.
\frac{\left(1+28x^{2}\right)\times 6x}{4x\left(x-9\right)}
Divide \frac{1+28x^{2}}{4x} by \frac{x-9}{6x} by multiplying \frac{1+28x^{2}}{4x} by the reciprocal of \frac{x-9}{6x}.
\frac{3\left(28x^{2}+1\right)}{2\left(x-9\right)}
Cancel out 2x in both numerator and denominator.
\frac{84x^{2}+3}{2\left(x-9\right)}
Use the distributive property to multiply 3 by 28x^{2}+1.
\frac{84x^{2}+3}{2x-18}
Use the distributive property to multiply 2 by x-9.
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}