23dgonzalezoulqwu 23dgonzalezoulqwu
  • 13-08-2017
  • Mathematics
contestada

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

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kphung76127
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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