Given:-

Take

We know that, Formula

Thus,

⇒

⇒

⇒

⇒

We know that, Formula

Thus,

⇒

⇒

⇒

⇒

⇒ 4x – x³ = 6x – 9x³

⇒ 9x³ – x³ + 4x – 6x = 0

⇒ 8x³ – 2x = 0

⇒ 2x(4x² – 1) = 0

⇒

All satisfies x value

So,

is the root of the given equation

Therefore,