Question

Calculati: [1,25•2,(6)-4]⁷:[0,(6)]⁵-1,2(7)
repede va rog dau coroana​

Answer 1

Răspuns:

[1,25•2,(6)-4]⁷:[0,(6)]⁵-1,2(7)=

(125/100×(26-2)/9-4)⁷:(6/9)⁵-(127-12)/90=

(5/4×24/9-4)⁷:(2/3)⁵-(115/90)⁽⁵=

(10/3-³⁾4)⁷:(2/3)⁵-23/18=

(10/3-12/3)⁷:(2/3)⁵-23/18=

-(2/3)⁷:(2/3)⁵-23/18=

-(2/3)²-23/18=

(-4/9)⁽²-23/18=

-8/18-23/18=

-31/18=-1,7(2)