How to find the maximum number of real zeros of the polynomial

What is the maximum number of zeros (x-intercepts) that a polynomial of degree 12 can have?

Create a polynomial, in standard form, of at degree 5 or higher. It must have at least one imaginary zero. List all possible Rational Zeros Find all zeros and write in standard form. Identify all multiplicities and explain how they affect the graph.   Find all intercepts Explain how you would find the end behavior for any polynomial then identify the end behavior for this polynomial.

find the maximum number of real zeroes of the polynomial  f(x)=-2x7-3x8-6-5x5

Find the general polynomial function of lowest possible degree with real number coefficientsthat has -2 and 3i as two of its zeros. Leave in factored form. Also, give the degree of thefunction you find.

What is the maximum number of real roots a 5th-degree polynomial can have?