Evaluate
56x-15yz-12y-5
Differentiate w.r.t. x
56
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2x-15yz+9\times 6x-4\times 3y-5
Multiply 3 and 5 to get 15.
2x-15yz+54x-4\times 3y-5
Multiply 9 and 6 to get 54.
56x-15yz-4\times 3y-5
Combine 2x and 54x to get 56x.
56x-15yz-12y-5
Multiply 4 and 3 to get 12.
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