Evaluate: a^-2b^3 if a = -3 and b = -2 . plz explain how you did it

a^-2 = 1/a^2 = 1/ (-3)^2 = 1/9

b^3 = (-2)^3 = -2*-2*-2 = -8

so a^-2b^3 = 1/9 * -8 = -8/9

Please let me know if you have any questions and best me if you are satisfactory.

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