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20-68x
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20-68x
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2\left(8x-12x-2x+6-2x\times 4-2x+4-2x\times 8-2x\right)
Multiply 2 and 6 to get 12.
2\left(-4x-2x+6-2x\times 4-2x+4-2x\times 8-2x\right)
Combine 8x and -12x to get -4x.
2\left(-6x+6-2x\times 4-2x+4-2x\times 8-2x\right)
Combine -4x and -2x to get -6x.
2\left(-6x+6-8x-2x+4-2x\times 8-2x\right)
Multiply 2 and 4 to get 8.
2\left(-14x+6-2x+4-2x\times 8-2x\right)
Combine -6x and -8x to get -14x.
2\left(-16x+6+4-2x\times 8-2x\right)
Combine -14x and -2x to get -16x.
2\left(-16x+10-2x\times 8-2x\right)
Add 6 and 4 to get 10.
2\left(-16x+10-16x-2x\right)
Multiply 2 and 8 to get 16.
2\left(-32x+10-2x\right)
Combine -16x and -16x to get -32x.
2\left(-34x+10\right)
Combine -32x and -2x to get -34x.
-68x+20
Use the distributive property to multiply 2 by -34x+10.
2\left(8x-12x-2x+6-2x\times 4-2x+4-2x\times 8-2x\right)
Multiply 2 and 6 to get 12.
2\left(-4x-2x+6-2x\times 4-2x+4-2x\times 8-2x\right)
Combine 8x and -12x to get -4x.
2\left(-6x+6-2x\times 4-2x+4-2x\times 8-2x\right)
Combine -4x and -2x to get -6x.
2\left(-6x+6-8x-2x+4-2x\times 8-2x\right)
Multiply 2 and 4 to get 8.
2\left(-14x+6-2x+4-2x\times 8-2x\right)
Combine -6x and -8x to get -14x.
2\left(-16x+6+4-2x\times 8-2x\right)
Combine -14x and -2x to get -16x.
2\left(-16x+10-2x\times 8-2x\right)
Add 6 and 4 to get 10.
2\left(-16x+10-16x-2x\right)
Multiply 2 and 8 to get 16.
2\left(-32x+10-2x\right)
Combine -16x and -16x to get -32x.
2\left(-34x+10\right)
Combine -32x and -2x to get -34x.
-68x+20
Use the distributive property to multiply 2 by -34x+10.
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}