Evaluate
a\left(9b-25\right)
Expand
9ab-25a
Quiz
Algebra
5 problems similar to:
- 3 a b - [ 4 a + 9 a - 7 a b - ( 4 a b - a ) + ( - a b + 11 a ) ]
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-3ab-\left(13a-7ab-\left(4ab-a\right)+\left(-a\right)b+11a\right)
Combine 4a and 9a to get 13a.
-3ab-\left(13a-7ab-4ab-\left(-a\right)+\left(-a\right)b+11a\right)
To find the opposite of 4ab-a, find the opposite of each term.
-3ab-\left(13a-7ab-4ab+a+\left(-a\right)b+11a\right)
The opposite of -a is a.
-3ab-\left(13a-11ab+a+\left(-a\right)b+11a\right)
Combine -7ab and -4ab to get -11ab.
-3ab-\left(14a-11ab+\left(-a\right)b+11a\right)
Combine 13a and a to get 14a.
-3ab-\left(25a-11ab+\left(-a\right)b\right)
Combine 14a and 11a to get 25a.
-3ab-25a-\left(-11ab\right)-\left(-a\right)b
To find the opposite of 25a-11ab+\left(-a\right)b, find the opposite of each term.
-3ab-25a+11ab-\left(-a\right)b
The opposite of -11ab is 11ab.
8ab-25a-\left(-a\right)b
Combine -3ab and 11ab to get 8ab.
8ab-25a+ab
Multiply -1 and -1 to get 1.
9ab-25a
Combine 8ab and ab to get 9ab.
-3ab-\left(13a-7ab-\left(4ab-a\right)+\left(-a\right)b+11a\right)
Combine 4a and 9a to get 13a.
-3ab-\left(13a-7ab-4ab-\left(-a\right)+\left(-a\right)b+11a\right)
To find the opposite of 4ab-a, find the opposite of each term.
-3ab-\left(13a-7ab-4ab+a+\left(-a\right)b+11a\right)
The opposite of -a is a.
-3ab-\left(13a-11ab+a+\left(-a\right)b+11a\right)
Combine -7ab and -4ab to get -11ab.
-3ab-\left(14a-11ab+\left(-a\right)b+11a\right)
Combine 13a and a to get 14a.
-3ab-\left(25a-11ab+\left(-a\right)b\right)
Combine 14a and 11a to get 25a.
-3ab-25a-\left(-11ab\right)-\left(-a\right)b
To find the opposite of 25a-11ab+\left(-a\right)b, find the opposite of each term.
-3ab-25a+11ab-\left(-a\right)b
The opposite of -11ab is 11ab.
8ab-25a-\left(-a\right)b
Combine -3ab and 11ab to get 8ab.
8ab-25a+ab
Multiply -1 and -1 to get 1.
9ab-25a
Combine 8ab and ab to get 9ab.
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}