Solve for n
n=2
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-8+2n+2n=0
Add 2n to both sides.
-8+4n=0
Combine 2n and 2n to get 4n.
4n=8
Add 8 to both sides. Anything plus zero gives itself.
n=\frac{8}{4}
Divide both sides by 4.
n=2
Divide 8 by 4 to get 2.
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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