Alg.3 Quiz Nov.24

A quadratic function has at least ____ real zeros

0

If F(x) is a polynomial of odd degree with real coefficients, then the equation F(x) = 0 has at least__________________ real root(s).

1

If a 4th-degree polynomial equation with integral coefficients has 2 + 7 as a root, then __________________ isalso a root of the equation

2- sqr.7

A quartic function has at most ______ real zeros

4

The graph of a certain quartic polynomial is tangent to the x-axis at x = -5, x = 8 and x = 12

False

Every cubic equation has at least one real root.

True

No polynomial equation can have an odd number of imaginary roots.

True

If P(x) is a polynomial with real coefficients, and a + bi is an imaginary root of the equation P(x) = 0, then__________________ is also a root

a-bi

Every polynomial has at least one real root.

false

The roots of a certain 5th-degree equation are 5, -2,

false

The roots of a certain quartic equation are 3, 4, -7 and 3 + i

false

A real root r of the equation P(x) = 0 exists between real numbers a and b when P(a) and P(b) have__________________ signs.

opposite