Question

Va rog la ex 8 am nevoie de răspuns

Answer 1

11,2(3)=(1123-23)/90=1100/90=110/9
9,(2)=(92-2)/9=90/9
b=[110/9-90/9]×9-1/100=20/9×9-1/100=20-1/100 amplificãm pe 20 cu 100
b=2000/100-1/100=1999/100

Answer 2

8) 
11, 2(3) =  ( 1 123 - 112 ) / 90 = 1 011 / 90 = 337 / 30 
9,(2) = ( 92 - 9) / 9 = 83 / 9 

b = ( 337 / 30 - 83 / 9 )  × 9 - 1 / 100
b = ( 3 ×337 - 10 × 83) / 9  × 9 - 1 / 100 
b = ( 1 011 - 830 ) - 1 / 100 
b = 181 - 0,01 
b = 180,99