Evaluate
20cx
Differentiate w.r.t. x
20c
Graph
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5cx-6xc+3x\times 7c
Cancel out x in both numerator and denominator.
-cx+3x\times 7c
Combine 5cx and -6xc to get -cx.
-cx+21xc
Multiply 3 and 7 to get 21.
20cx
Combine -cx and 21xc to get 20cx.
Examples
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Simultaneous equation
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Limits
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