Question

Find the zeros of the following polynomial.

Answer 1

a number of ways you could tackle that:

1) factor it, set the factors equal to 0 and solve

2) substitute u = x^2 to make it a quadratic, then use the quadratic formula to find the values of u that solve the resulting equation. substitute back and solve for \(x\) to get the zeros of this equation.

3) try out the proposed solutions and reject any that don't work