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In $9-14$ : a. For each given value of the discriminant of a quadratic equation with rational coefficients, determine if the roots of the quadratic equation are $(1)$ rational and unequal, $(2)$ rational and equal, $(3)$ irrational and unequal, or $(4)$ not real numbers. b. Use your answer to part a to determine the number of $x$ -intercepts of the graph of the corresponding quadratic function. 0

(a) rational number, equal(b) 1 x-intercept

Algebra

Chapter 5

QUADRATIC FUNCTIONS AND COMPLEX NUMBERS

Section 3

The Discriminant

Equations and Inequalities

Quadratic Functions

Complex Numbers

Polynomials

Campbell University

Oregon State University

Idaho State University

Lectures

01:32

In mathematics, the absolu…

01:11

00:31

In $9-14$ : a. For each gi…

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00:39

01:40

01:00

Use the discriminant to de…

01:52

In $15-23 :$ a. Find the v…

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01:36

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given a disco menti is equal to see Well, we can tell that roots of the equation would be rational, and they will be equal No calling to be. Since the boots are equal, there's only one X intercept.

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