Question: 7.4.1 Study: Rationalizing Denominators Study Guide Algebra II Name: Date: Use the questions below to keep track of key concepts from this lesson's study activity.

7.4.1 Study: Rationalizing Denominators Study Guide Algebra II Name: Date: Use the questions below to keep track of key concepts from this lesson's study activity. 1) Main Idea: Rationalizing the denominator is a process used to simplify fractions. Fill in the blanks. When? The fraction has a expression in its denominator. How? Multiply the fraction by a form of that gets rid of the radical in the denominator. Why? Dividing by an integer or rational number is easier to do than dividing by an number. 2) Main Idea: To rationalize a denominator that has one term, multiply the fraction by denominator denominator ationalize each denominator. 72 x JX - 1 ain Idea: To rationalize a denominator that has two terms, multiply the fraction by gate of denominator gate of denominator the sign between the two terms in each expression to write its conjugate. sion: 5 + v3 expression: v10 - 2 expression: vx + x-1 ate: conjugate: conjugate: 1121 Sherrick Rodd CE 456-2171 or (350) 456-1165

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