Question

Calcule:

A) (-3)⁻¹ + (-1)⁻³
B) 2⁻⁴ ₋ 2²
C) (4⁻¹ + 2⁻³)⁻¹
D) (6⁻² ₓ 3²)⁻¹

Quero aprender a fazer, alguém me explica?

Answer 1

(-3)-¹ + (-1)-³ = - 1/3 + (- 1/1³) = - 1/3 - 1 = - 4/3

2-⁴ - 2² = 1/2⁴ - 2² = 1/16 - 4 = 65/16

(4-¹ + 2-³)-¹ = (1/4 + 1/2³)-¹ = (3/4)-¹ = 4/3

(6-² . 3²)-¹ = (1/6² . 3²)-¹ = (1/36 . 9)-¹ = (9/36)-¹ = 36/9 = 4