Question

Se considera nr raționale pozitive:x=, 1 intreg si 5/6 si y=1 intreg si 8/9

a) Comparati numerele x si y
b) Aflati rezultatul calcului y:(x la a 2-a-y)

Va rog mult!!! ​

Answer 1

1 intreg 5/6 = (1×6+5)/6=11/6

1 intreg 8/9= (1×9+8)/9= 17/9

a) x=11/6=1,8(3)

y=17/9=1,(8)

deci se vede ca x>y

b)y:(x^2-y)=17/9:[(11/6)^2 - 11/6]=

17/9:[121/36-11/6] amplificãm pe 11/6 cu 6

17/9:[121/36-66/36]=

17/9:55/36= 17/9×36/55= (17×4)/55= 68/55