Question

已知a与b互为相反数,c与d互为倒数,且|y*y*y+1|＝0,请求出代数式y*y*y+(a+b)2010-(-cd)2

Answer 1

a+b=0

cd=1

|y^3+1|=0

y^3=-1

y=-1

y*y*y+(a+b)2010-(-cd)2009

=(-1)^3+0^2010-(-1)^2009

=-1+0-(-1)

=0