Question

Is the equation x9 – 5x3 + 6 = 0 quadratic in form? Explain why or why not.

Answer 1

so to can decide than this equation is quadratic or not first of all you need to know what mean what is a quadratic equation ?

the base formula of a quadratic equation is

Ax^2 +Bx +C = 0

in your problem given

x^9 -5x^3 +6 = 0 so is this equation quadratic in form ?

note x^3 = y and rewrite your equation using this so what will get ?

hope helped