Question

. Calcati:a)(2/3)²+8/15 b)(1/2)³.16 c)(_5/6)².1 1/5 d)(5/9-3/7)⁰​

Answer 1

Răspuns:

Explicație pas cu pas:

a) (2/3)²+8/15 = ⁵⁾4/9 + ⁵⁾8/15 = (20+40)/45 = 60/45⁽⁵ = 12/9⁽³ = 4/3

b) (1/2)³·16 = 1/8 ·16 = 16/8 = 2

c) (-5/6)²· 1 1/5 = 25/36 · 6/5 = (25·6)/(36·5) = 5/6

d) (5/9-3/7)⁰​ = 1 (orice numar la puterea 0 este egal cu 1)