Question

x = (-1)(-1)(-1)......(2n +1) times and y =(-1)^(-1) (-1) X... 20 times, where n is a
natural number. Find x+y.​

Answer 1

Step-by-step explanation:

according to question x=(-1) ^( to 2n+1) i.e it is raised to an odd no.

i.e x=-1

and y=(-1)^20

y=1

so x+y=-1+1=1-1=0