Write the coefficients of x^2 in each of the following: (i) 2 + x^2n + x (ii) 2 - x^2n + x^3 (iii) (π/2)x^2 + x (iv) √2 x - 1

(i) 2 + x 2 + x Coefficient of x 2 is 1. (ii) 2 - x 2 + x 3 Coefficient of x 2 is (-1). (iii) x 2 + x Coefficient of x 2 is = (iv) x - 1 Coefficient of x 2 is 0.