Question

v) a(x2+1) = x(a2+1)​

Answer 1

$a( {x}^{2} + 1) = x( {a}^{2} + 1) \\ a {x}^{2} + a = x {a}^{2} + x \\ a {x}^{2} - x {a}^{2} = x - a \\ ax(x - a) = (x - a) \\ ax = 1 \\ x = \frac{1}{a}$

hope it helps you