2sin2x-sin^2x=cos^2x
2sin2x=cos^2x+sin^2x
2sin2x=1
sin2x=1/2
2x=(-1)^n*п/6+пn
x=(-1)^n*п/12+пn
(х+2013)^3=1^3
x+2013=1
x=1-2013
x=-2012
210 - 2у = 32
2у = 210 - 32
2у = 178
у = 178/2
у = 89