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Pbsladek · Answer 1 · 2018-05-31T14:54:52+0000

Dividing means you subtract the exponents. Dividing by a number is the same as changing the sign on the exponent.

x⁰/x² = x⁻² = 1/x²
y⁻³/y⁻¹ = y⁻³⁻⁻¹ = y⁻² = 1/y²

together is 1/x²y², answer B

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