Evaluate
s\left(t-1\right)
Factor
s\left(t-1\right)
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-s+\frac{4}{9}st+\frac{5}{9}st
Combine s and -2s to get -s.
-s+st
Combine \frac{4}{9}st and \frac{5}{9}st to get st.
\frac{9s+4st-18s+5st}{9}
Factor out \frac{1}{9}.
s\left(-9+9t\right)
Consider 9s+4st-18s+5st. Factor out s.
9t-9
Consider 9+4t-18+5t. Multiply and combine like terms.
9\left(t-1\right)
Consider 9t-9. Factor out 9.
s\left(t-1\right)
Rewrite the complete factored expression.
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}