Question

Va rog sa faceți asta rapid​

Answer 1

Răspuns:

Explicație pas cu pas:

a=[(-2/3)^6:(-2/3)^4+(-3/8)^5:(-3/8)³]:1/18

  =[(-2/3)²+(-3/8)²]:1/18=(4/9+9/64):1/18=(64×4+9x9)/9x64:1/18=

  =(256+81)×18/9×64=337/32

a^(-1)=32/337

Answer 2

$\it a=\Big[\Big(\dfrac{2}{3}}\Big)^{2}+\Big(\dfrac{3}{8}\Big)^{2}\Big]\cdot18=(\dfrac{4}{9}+\dfrac{9}{64})\cdot18=\dfrac{4}{9}\cdot18+\dfrac{9}{64}\cdot18\\ \\ \\ a^{-1}=\dfrac{1}{a}$