Evaluate
2a\left(b-3\right)
Factor
2a\left(b-3\right)
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7ab-\left(-8ab\right)-11a-13ab+5a
Multiply -4 and 2 to get -8.
7ab+8ab-11a-13ab+5a
The opposite of -8ab is 8ab.
15ab-11a-13ab+5a
Combine 7ab and 8ab to get 15ab.
2ab-11a+5a
Combine 15ab and -13ab to get 2ab.
2ab-6a
Combine -11a and 5a to get -6a.
a\left(2b-6\right)
Factor out a.
2b-6
Consider 7b+8b-11-13b+5. Multiply and combine like terms.
2\left(b-3\right)
Consider 2b-6. Factor out 2.
2a\left(b-3\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}