Evaluate
9x-21y-8z
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9x-21y-8z
Quiz
Algebra
5 problems similar to:
- 4 x - [ - 5 x + \{ 3 x - ( 2 x - 3 y + z ) - 9 ( x - 2 y - z ) \} ]
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-4x-\left(-2x-\left(2x-3y+z\right)-9\left(x-2y-z\right)\right)
Combine -5x and 3x to get -2x.
-4x-\left(-2x-2x-\left(-3y\right)-z-9\left(x-2y-z\right)\right)
To find the opposite of 2x-3y+z, find the opposite of each term.
-4x-\left(-2x-2x+3y-z-9\left(x-2y-z\right)\right)
The opposite of -3y is 3y.
-4x-\left(-4x+3y-z-9\left(x-2y-z\right)\right)
Combine -2x and -2x to get -4x.
-4x-\left(-4x+3y-z-9x+18y+9z\right)
Use the distributive property to multiply -9 by x-2y-z.
-4x-\left(-13x+3y-z+18y+9z\right)
Combine -4x and -9x to get -13x.
-4x-\left(-13x+21y-z+9z\right)
Combine 3y and 18y to get 21y.
-4x-\left(-13x+21y+8z\right)
Combine -z and 9z to get 8z.
-4x-\left(-13x\right)-21y-8z
To find the opposite of -13x+21y+8z, find the opposite of each term.
-4x+13x-21y-8z
The opposite of -13x is 13x.
9x-21y-8z
Combine -4x and 13x to get 9x.
-4x-\left(-2x-\left(2x-3y+z\right)-9\left(x-2y-z\right)\right)
Combine -5x and 3x to get -2x.
-4x-\left(-2x-2x-\left(-3y\right)-z-9\left(x-2y-z\right)\right)
To find the opposite of 2x-3y+z, find the opposite of each term.
-4x-\left(-2x-2x+3y-z-9\left(x-2y-z\right)\right)
The opposite of -3y is 3y.
-4x-\left(-4x+3y-z-9\left(x-2y-z\right)\right)
Combine -2x and -2x to get -4x.
-4x-\left(-4x+3y-z-9x+18y+9z\right)
Use the distributive property to multiply -9 by x-2y-z.
-4x-\left(-13x+3y-z+18y+9z\right)
Combine -4x and -9x to get -13x.
-4x-\left(-13x+21y-z+9z\right)
Combine 3y and 18y to get 21y.
-4x-\left(-13x+21y+8z\right)
Combine -z and 9z to get 8z.
-4x-\left(-13x\right)-21y-8z
To find the opposite of -13x+21y+8z, find the opposite of each term.
-4x+13x-21y-8z
The opposite of -13x is 13x.
9x-21y-8z
Combine -4x and 13x to get 9x.
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}