Answered

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

324

20 1/4

9(-6)°

1/144

Sagot :

sqdancefan

9514 1404 393

Answer:

  (b)  20 1/4

Step-by-step explanation:

9(-3)^2(2^-2) = 9(9)(1/4) = 81/4 = 20 1/4

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