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Warm-ups: Simplify the following
− 2𝑎 𝑏 2 ∙ 6 𝑎 3 𝑏 2 3− 4−
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Section 7.6 Rational Exponents
Class notes from ___________ By the end of this section, you will be able to: Write expression with rational exponents in radical form and vice versa; Simplify expressions in exponential or radical form. Assignment Due ___________: A# 7.6: Page 420 #18-50 even MUST SHOW WORK TO RECEIVE CREDIT
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Example #1: Radical and Exponential Forms
Write the following in radical form: Write the following in exponential form: a. 𝑥 1 5 d. 8 𝑐 b e c. 𝑚 2 3 f 𝑥 5 𝑦 7
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Example #2: Evaluate Expressions with Rational Exponents
Evaluate each expression. a. 27 − 1 3 d. 81 − 1 4 b e c f
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Example #3: Real World Example
The radius r of a sphere with volume V is given by 𝑟= 3𝑉 4𝜋 A. Find the radius of a ball whose volume is 77 𝑐𝑚 3 B. Find the radius of a ball whose volume is 52 𝑐𝑚 3
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Example #4: Simplify Expressions with Rational Exponents
Simplify each expression. a. 𝑎 ∙ 𝑎 9 4 b. 𝑟 − 4 5 c. 𝑎 ∙ 𝑎 1 4
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Example #5: Simplify Radical Expressions
Simplify each expression. c. 𝑦 𝑦 −2 a b 𝑥 4
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PRACTICE #5: Simplify Radical Expressions
Simplify each expression. f. 𝑎 𝑎 −1 d e 𝑥 3
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