23dgonzalezoulqwu 23dgonzalezoulqwu

13-08-2017
Mathematics

contestada

Evaluate 9x^2y^-2 for X=-3 and y=2

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kphung76127 kphung76127

13-08-2017

9*(-3)^2*(2)^-2
9*9*2^-2
81*2^-2
81*(1/4)
20.25

Final answer: 20.25 or 81/4

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