Question 965052
5a^6'b^-9
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c^-4'd^5

The answer key has the c^-4 joining the 5 (5c^4) as well as a^-6, b^-9 moving to the denominator with d^5. I hope you can understand this email and explain to me why these exponents moved as they did.
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Use * (Shift 8) for multiply
5a^6*b^-9/(c^-4*d^5)
Don't remember rules if it's not necessary.  Exponents don't move.
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5a^6*b^-9/(c^-4*d^5)
Multiply NUM and DEN by b^9
5a^6*b^0/(b^9*c^-4*d^5)
b^0 = 1
5a^6/(b^9*c^-4*d^5)
Multiply NUM and DEN by c^4
5a^6c^4/(b^9*c^0*d^5)
5a^6c^4/(b^9d^5)