110. 1) =(4)√(27*3 /4*4) =(4)√(3^4/2^4) =3/2 =1.5
(6 3/4 =27/4)
2) (11 1/4 =45/4; 3 1/3 =10/3)
кубический √45/4 ÷ кубический √10/3 =
=(3)√(45/4 *3/10) =(3)√(45*3 /4*10) =
=(3)√(5*3^3 /2^3*5) =3/2 кубический √5/5 =
=1.5 *1 =1.5
(1+5х):(х+1)=4,5
1+5х=4,5х+4,5
0,5х=3,5
5х=35
х=7
Проверяем:
(1+5+5+5+5+5+5+5):8=4,5