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Evaluate
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Differentiate w.r.t. x
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\frac{\left(-15\right)^{1}x^{15}y^{7}}{\left(-3\right)^{1}x^{2}y^{8}}
Use the rules of exponents to simplify the expression.
\frac{\left(-15\right)^{1}}{\left(-3\right)^{1}}x^{15-2}y^{7-8}
To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent.
\frac{\left(-15\right)^{1}}{\left(-3\right)^{1}}x^{13}y^{7-8}
Subtract 2 from 15.
\frac{\left(-15\right)^{1}}{\left(-3\right)^{1}}x^{13}\times \frac{1}{y}
Subtract 8 from 7.
5x^{13}\times \frac{1}{y}
Divide -15 by -3.
\frac{\mathrm{d}}{\mathrm{d}x}(\left(-\frac{15y^{7}}{-3y^{8}}\right)x^{15-2})
To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent.
\frac{\mathrm{d}}{\mathrm{d}x}(\frac{5}{y}x^{13})
Do the arithmetic.
13\times \frac{5}{y}x^{13-1}
The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.
\frac{65}{y}x^{12}
Do the arithmetic.