Question

plzzz solve it fast
expand (1-x+1/x)^2

through EXPANSION

Answer 1

(1 - x +1/x)² =  1 + x² + 1/x²  +2(1.x + x.(-1/x) + (-1/x).1)
                           = 1+x² + 1/x² +2x - 2 - 2/x
                           =  x² + 1/x² + 2x -2/x -1

 by binomial
   [{1-x} + 1/x]² = ²C₀ (1 + x)⁰ (-1/x)²  +  ²C₁(1-x)¹(-1/x)¹ + ²C₂ (1-x)² (-1/x)⁰
                       =  1/x² - 2/x - 2 + 1 + x² + 2x = x² + 1/x² + 2x -2/x - 1

hope u'll get it ......if so mark as brainliest