Question

X={x/x€R & x^2-1= 0 } prove that it is an empty set

Answer 1

Answer:

x²-1=0

therefore, x²-1=0-1

therefore, x²= 1

X= {1}

Step-by-step explanation:

if we subtract 1 from 1 then we get 0. Therefore X set is empty/null set