Solve for x
x=4
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x-2\left(-x\right)-x-3+x=9
Add x to both sides.
x-2\left(-x\right)-3=9
Combine -x and x to get 0.
x-2\left(-x\right)=9+3
Add 3 to both sides.
x-2\left(-x\right)=12
Add 9 and 3 to get 12.
x-2\left(-1\right)x=12
Multiply -1 and 2 to get -2.
x+2x=12
Multiply -2 and -1 to get 2.
3x=12
Combine x and 2x to get 3x.
x=\frac{12}{3}
Divide both sides by 3.
x=4
Divide 12 by 3 to get 4.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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