Question

Evaluate 12x^2 y^-1 for x = 3 and y = 4


-27
27
324

Answer 1

Your answer will be 27

Okay, then if x=3 and y=4, then the new expression is (12x9)(0.25). If you solve that you'll get 27, since 12x9=108 and 1/4 of 108=27

Answer 2

$12x^2 y^{-1}$

Plug given values of x = 3 and y = 4

$=12(3)^2 (4)^{-1}$

$=12(9) *\frac{1}{4}$

$=\frac{108}{4}$

$=27$

Hence final answer is 27.