Evaluate
21a^{3}b^{7}
Differentiate w.r.t. a
63a^{2}b^{7}
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7^{1}a^{2}b^{3}\times 3^{1}a^{1}b^{4}
Use the rules of exponents to simplify the expression.
7^{1}\times 3^{1}a^{2}a^{1}b^{3}b^{4}
Use the Commutative Property of Multiplication.
7^{1}\times 3^{1}a^{2+1}b^{3+4}
To multiply powers of the same base, add their exponents.
7^{1}\times 3^{1}a^{3}b^{3+4}
Add the exponents 2 and 1.
7^{1}\times 3^{1}a^{3}b^{7}
Add the exponents 3 and 4.
21a^{3}b^{7}
Multiply 7 times 3.
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