# Pre-Algebra

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Simplify the expression. Write the result using positive exponents only.
(-2x^3y^-4)(5x^-1y)

• Pre-Algebra -

(-2x^3y^-4)(5x^-1y)
= (-2)(5)(x^3)(x^-1)(y^-4)(y^-4)(y)
= -10 x^2 y^-3
or
= -10x^2/y^3

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