5.3 ­ Solving Quadratic Equations by Finding Square Roots.notebook
December 13, 2011
5.3 ­ SOLVING QUADRATIC EQUATIONS
BY FINDING SQUARE ROOTS
RADICAL REMINDERS
RATIONALIZE THE DENOMINATOR
In order to be completely simplified, we cannot leave a root
in the denominator of a fraction. When this occurs, we must
"rationalize the denominator".
Dec 12­9:43 AM
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5.3 ­ Solving Quadratic Equations by Finding Square Roots.notebook
December 13, 2011
SOLVING QUADRATIC EQUATIONS BY FINDING SQUARE ROOTS
Last section, we solved equations that were factorable, which produced "nice" integer or fraction answers. Now, we'll examine
equations that may not turn out as "nice."
GOAL: GET EQUATIONS IN THE FORM BEFORE WE BEGIN:
What are the possible answers to: Whenever you take the square root, which results in 2 answers, you must use the ± symbol!
EXAMPLES:
(a)
(b)
(c)
(d)
HOMEWORK: p.267 #31,43,47,51­56 Dec 12­9:51 AM
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