Evaluate
2\left(xy-x-1\right)
Expand
2xy-2x-2
Share
Copied to clipboard
4xy-2x+4y-2-y\left(2x+4\right)
Apply the distributive property by multiplying each term of 2x+2 by each term of 2y-1.
4xy-2x+4y-2-\left(2yx+4y\right)
Use the distributive property to multiply y by 2x+4.
4xy-2x+4y-2-2yx-4y
To find the opposite of 2yx+4y, find the opposite of each term.
2xy-2x+4y-2-4y
Combine 4xy and -2yx to get 2xy.
2xy-2x-2
Combine 4y and -4y to get 0.
4xy-2x+4y-2-y\left(2x+4\right)
Apply the distributive property by multiplying each term of 2x+2 by each term of 2y-1.
4xy-2x+4y-2-\left(2yx+4y\right)
Use the distributive property to multiply y by 2x+4.
4xy-2x+4y-2-2yx-4y
To find the opposite of 2yx+4y, find the opposite of each term.
2xy-2x+4y-2-4y
Combine 4xy and -2yx to get 2xy.
2xy-2x-2
Combine 4y and -4y to get 0.
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}