Exponents: Product rule (a^x)(a^y) = a^(x+y)

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Examples
Lessons
  1. prove 3532=35+2=373^5 \cdot 3^2 = 3^{5+2} = 3^7
    1. simplify: (3a2b)(5a4b10)(3a^2b)(-5a^4b^{10})