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Simplify. Your answer should contain only positive exponents.) 4yx^52x^2y^3 11.) -4x^3y^3/4x^2y^22y^0 12.
Simplify. Your answer should contain only positive exponents. 10.) 4yx^5•2x^2y^311.) -4x^3y^3/4x^2y^2•2y^012.) (4uv^-2)^-313-) (2mn^4)^4•2m^-1n^2