4 ( 2 x - 3 y + 2 ) - 0.2 [ ( 4 x - 15 y ) - 9 x )
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9x-9y+8
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9x-9y+8
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8x-12y+8-0.2\left(4x-15y-9x\right)
Use the distributive property to multiply 4 by 2x-3y+2.
8x-12y+8-0.2\left(-5x-15y\right)
Combine 4x and -9x to get -5x.
8x-12y+8+x+3y
Use the distributive property to multiply -0.2 by -5x-15y.
9x-12y+8+3y
Combine 8x and x to get 9x.
9x-9y+8
Combine -12y and 3y to get -9y.
8x-12y+8-0.2\left(4x-15y-9x\right)
Use the distributive property to multiply 4 by 2x-3y+2.
8x-12y+8-0.2\left(-5x-15y\right)
Combine 4x and -9x to get -5x.
8x-12y+8+x+3y
Use the distributive property to multiply -0.2 by -5x-15y.
9x-12y+8+3y
Combine 8x and x to get 9x.
9x-9y+8
Combine -12y and 3y to get -9y.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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Matrix
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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}