Please help with quadratics problem !?

Question

1) find the real roots of the equation: 18/x^4 + 1/x^2 = 4

(18 divided by x to the power of 4 + 1 divided by x to the power of 2 = 4)

Answer 1

Step 1 :

The equation is .

Write the equation with least common denominator.

Least common denominator of .

Factorize the equation.

Apply zero product property.

The real roots of the equation are .

Solution :

The real roots of the equation are .