36/5×(5/6-5/3)²=36/5×(-5/6)²=36/5×25/36=5
36×(1/3)³+6×(1/3)²=36×1/27+6×1/9=4/3+2/3=6/3=2
x+4=5/(2x-1),где 2х-1≠0,т.е х≠1/2
(х+4)(2х-1)=5
2х²+8х-х-4-5=0
2х²+7х-9=0
D=49+72=121
х1=(-7+11)/4=1
х2=(-7-11)/4=-4 1/2
при b=1/3 (b-2)³-b×(3-b)² =b³-6b²+12b-8-9b+6b²-b³=3b-8=3×1/3 -8=-7