Question

Find all the zeros of the equation
-2x^4+27x^2+1200=0

Answer 1

For this case we have the following polynomial:
 $-2x ^ 4 + 27x ^ 2 + 1200 = 0$
 To solve the problem we apply the following steps:
 1) We make a change of variables u = x ^ 2
 2) We rewrite the polynomial
 3) Solve the quadratic equation using the formula for the quadratic equation
 4) We return the change and find four roots
 Answer:
 See attached image for procedure and solution