Question

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

324

20 1/4

9(-6)°

1/144

Answer 1

9514 1404 393

Answer:

(b) 20 1/4

Explanation:

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