Evaluate
\frac{5\left(a-1\right)\left(a+2\right)}{18a^{4}}
Expand
\frac{5\left(a^{2}+a-2\right)}{18a^{4}}
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\frac{\left(a-1\right)\times 5}{3a\times 6a}\times \frac{a+2}{a^{2}}
Multiply \frac{a-1}{3a} times \frac{5}{6a} by multiplying numerator times numerator and denominator times denominator.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{3a\times 6aa^{2}}
Multiply \frac{\left(a-1\right)\times 5}{3a\times 6a} times \frac{a+2}{a^{2}} by multiplying numerator times numerator and denominator times denominator.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{3a^{2}\times 6a^{2}}
Multiply a and a to get a^{2}.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{3a^{4}\times 6}
To multiply powers of the same base, add their exponents. Add 2 and 2 to get 4.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{18a^{4}}
Multiply 3 and 6 to get 18.
\frac{\left(5a-5\right)\left(a+2\right)}{18a^{4}}
Use the distributive property to multiply a-1 by 5.
\frac{5a^{2}+5a-10}{18a^{4}}
Use the distributive property to multiply 5a-5 by a+2 and combine like terms.
\frac{\left(a-1\right)\times 5}{3a\times 6a}\times \frac{a+2}{a^{2}}
Multiply \frac{a-1}{3a} times \frac{5}{6a} by multiplying numerator times numerator and denominator times denominator.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{3a\times 6aa^{2}}
Multiply \frac{\left(a-1\right)\times 5}{3a\times 6a} times \frac{a+2}{a^{2}} by multiplying numerator times numerator and denominator times denominator.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{3a^{2}\times 6a^{2}}
Multiply a and a to get a^{2}.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{3a^{4}\times 6}
To multiply powers of the same base, add their exponents. Add 2 and 2 to get 4.
\frac{\left(a-1\right)\times 5\left(a+2\right)}{18a^{4}}
Multiply 3 and 6 to get 18.
\frac{\left(5a-5\right)\left(a+2\right)}{18a^{4}}
Use the distributive property to multiply a-1 by 5.
\frac{5a^{2}+5a-10}{18a^{4}}
Use the distributive property to multiply 5a-5 by a+2 and combine like terms.
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}