Make sure the quadratic equation is in standard form ax 2 bx c 0. The polynomial pxx-1x-3² is a 3rd degree polynomial but it has only 2 distinct zeros. This is the easiest way to find the zeros of a polynomial function.
Find zeros of a quadratic function by Completing the square There are some quadratic polynomial functions of which we can find zeros by making it a perfect square.
Solution to Example 4 Solve fx 0 ln x - 3 - 2 0 Rewrite as follows ln x - 3 2 Rewrite the above equation changing it from logarithmic to exponential form x - 3 e 2 and solve to find one zero x 3 e 2. This is notes worksheet and key with 16 problems. Find the zeros of each polynomial. Find zeros of a quadratic function by Completing the square There are some quadratic polynomial functions of which we can find zeros by making it a perfect square.