Question

16. The maximum number of real roots of the equation x2n -1 = 0 is
(1) 2 (2) 3 (3) n (4) 2n

Answer 1

Degree of polynomial on LHS is the max no of solutions....


Thus, here, max no. of solutions are 2n...

Answer 2

$\huge\boxed{\texttt{\fcolorbox{Red}{aqua}{Hey Mate}}}$

$<b><i><font face=Copper black size=4 color=blue>$
Here is your answer
The maximum number of roots of the equation
${x}^{2n} - 1 = 0$
is 2n
Because the maximum number of roots depends upon the power of x which is 2n

Hence Option (D) 2n is your answer

$\large{\red{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\underline{\underline{\underline{Hope\:it\:helps\: you}}}}}}}}}}}}}}}$