Question

(3/5)-² • (5/2)-¹ - (4/3)-²• (1/4)-²

alguém me ajuda por favor ​

Answer 1

(3/5)^(-2) × (5/2)^(-1) - (4/3)^(-2) × (1/4)^(-2).

(5/3)² × (2/5)¹ - (3/4)² × (4/1)².

25/9 × 2/5 - 9/16 × 16/1 = 5/9 × 2/1 - 9/1 × 1/1.

10/9 - 9/1 = 10/9 - 81/9 = -71/9.