Equations of degree greater than 2

If P(x) is a polynomial, then:

x = r is a root of P(x) →{	(x- r) is a factor of P(x)
	x = r is a solution of P(x) = 0

That’s why the solutions of the equation are also called “roots of the equation”.

Then, to solve an equation of degree bigger than two, we have to decompose the polynomial.

Example:

Exercise: Solve the following equations