Question

{(1/3)-²-(1/2)-³}-(1/4)-²​

Answer 1

Question-

{(1/3)-²-(1/2)-³}-(1/4)-²​

Answer-

$\frac{1}{3}^{-2}-\frac{1}{2}^{-2} -\frac{1}{4}^{-2}\\=3^2-2^2-4^2\\=9-4-16\\=9-20\\=-11$

So the answer to your question is -11