mer Polynomial Functions Review 1. For x3 + 2x2 + 7x4 - 3, which of the following statements is true? 12. Sketch the graph of f(x) = x3 - A The degree of the polynomial 2x2 - 3x by finding the zeros. is 3. B Written in standard form, the polynomial is 7x4 + x3 + 2x2 - 3. C The polynomial is a binomial. D The leading coefficient is 1. 3. Simplify (12x3 - 8x2) - (3x3 + 9x2 + x - 7 ). 4. Simplify (x2 + 3x)(x2 - x + 4). 13. Find the zeros of the function f(x) = x3 - 2x2 - 19x + 20, and describe the behavior of the graph at each zero. A The graph touches the x-axis at 4, and it crosses the x-axis at -1 and -5. B The graph touches the x-axis at 4, -5, and 1. C The graph crosses the x-axis at 5, 1, and -4. D The graph touches the x-axis at -4, and it crosses the x-axis at 1 and 5