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# 8.2 Exponenrts

## on May 23, 2008

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## 8.2 ExponenrtsPresentation Transcript

• Algebra Warm Up: pg. 382 # 68-69 REMEMBER --becasue of the ABS value-- split into 2 cases to solve!
• 8.2 Laws of Exponents: Powers and Products pg. 377 -382 So yesterday you learned: When multiplying like bases--you add exponents When multiplying monomials--you multiply the coefficents, add the exponents of the like bases
• The second rule of exponents: (3 parts) Raising power to a power. In this case you will be applying an exponent to a set of parentheses (multiplying the exponents together)
• pg. 378
• Raising Monomials to a Power In this case--again you are applying the exponent outside the ( ) to everything inside! JUST like you use Distributive Property--The exponent applies to EVERY part inside the ( )--THEN simplify if you can!
• pg. 379
• pg. 379
• pg. 380
• Sometimes you will have word problems--This just involves SUBSTITUTING an expression into a formula
• Powers of -1 Recall from chapter 2- negative x megative = positive negative x positive = negative positive x negative = negative positive x positive = posistive This idea applies to exponents and negative numbers! EVEN exponent applied to negative bases GIVES positive answer (negatives cancel out) ODD exponent applied to negative bases GIVES negative answer
• pg. 380
• Now you try them together! pg. 381 # 2-25 DON'T forget about the rule from yesteday--They will still apply!