Question

1. Multiplique os números racionais positivos e negativos: a) 3/5.3/5 b)5/3.2/5 c(-2/3).2/3 d)(-7/8).(-3/5) e)(2/3).(-2/3).(2/3)​

Answer 1

Resposta:

a) 9/25

b) 2/3

c) - 4/9

d) 21/40

e) - 8/27

Explicação passo-a-passo:

a) 3/5 × 3/5 = (3/5)² = 9/25

b) 5/3 × 2/5 = 2/3

c) (- 2/3) × 2/3 = - 4/9

d) (- 7/8) × (- 3/5) = 21/40

e) 2/3 × (- 2/3) × 2/3 = (2/3)² × (- 2/3) = 4/9 × (- 2/3)

= - 8/27