8.2 exponenrts

15
Algebra Warm Up: pg. 382 # 68-69 REMEMBER --becasue of the ABS value-- split into 2 cases to solve!

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Page 1: 8.2 Exponenrts

Algebra Warm Up:pg. 382 # 68-69REMEMBER --becasue of the ABS value--split into 2 cases to solve!

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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

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The second rule of exponents:

Raising power to a power.

In this case you will be applying an exponent to a set of parentheses (multiplying the exponents together)

(3 parts)

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pg. 378

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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!

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pg. 379

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pg. 379

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pg. 380

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Sometimes you will have word problems--This just involves SUBSTITUTING an expression into a formula

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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

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pg. 380

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Now you try them together! pg. 381 # 2-25

DON'T forget about the rule from yesteday--They will still apply!

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