(x+2 \left( x-10 \right) -(x+2 \left( x+4 \right)
Evaluate
-28
Factor
-28
Graph
Share
Copied to clipboard
x+2x-20-\left(x+2\left(x+4\right)\right)
Use the distributive property to multiply 2 by x-10.
3x-20-\left(x+2\left(x+4\right)\right)
Combine x and 2x to get 3x.
3x-20-\left(x+2x+8\right)
Use the distributive property to multiply 2 by x+4.
3x-20-\left(3x+8\right)
Combine x and 2x to get 3x.
3x-20-3x-8
To find the opposite of 3x+8, find the opposite of each term.
-20-8
Combine 3x and -3x to get 0.
-28
Subtract 8 from -20 to get -28.
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}