Question

calculați 2 2 supra 5 minus 1 2supra 5 minus 1 supra 6 totul împărțit la 0,2(3)x 10 supra 7+1 supra 2​

Answer 1

Răspuns:

2 si 2/5=(2·5+2)/5=12/5

1 si 2/5=7/5

0,2(3)=(23-2)/90=21/90=7/30

(12/5-7/5-1/6):(7/30·10/7+1/2)²=

(⁶⁾5/5-⁵⁾1/6):(70/210+1/2)²=

(30/30-5/30):(²⁾1/3+³⁾1/2)²=

25/30:(2/6+3/6)²=

5/6:(5/6)²=

5/6:25/36=

5/6·36/25=6/5=1,2