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8x+32.5
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8x+32.5
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1.5x+2x-8+4.5\left(x+9\right)
Use the distributive property to multiply 2 by x-4.
3.5x-8+4.5\left(x+9\right)
Combine 1.5x and 2x to get 3.5x.
3.5x-8+4.5x+40.5
Use the distributive property to multiply 4.5 by x+9.
8x-8+40.5
Combine 3.5x and 4.5x to get 8x.
8x+32.5
Add -8 and 40.5 to get 32.5.
1.5x+2x-8+4.5\left(x+9\right)
Use the distributive property to multiply 2 by x-4.
3.5x-8+4.5\left(x+9\right)
Combine 1.5x and 2x to get 3.5x.
3.5x-8+4.5x+40.5
Use the distributive property to multiply 4.5 by x+9.
8x-8+40.5
Combine 3.5x and 4.5x to get 8x.
8x+32.5
Add -8 and 40.5 to get 32.5.
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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
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