multipying powers lesson 15. 42424242 base exponent power
DESCRIPTION
EXPONENT LAW 1 PRODUCT OF POWERS PRODUCT OF POWERS n a x n b = n a+b n a x n b = n a+b Multiplying powers with the same base Multiplying powers with the same baseTRANSCRIPT
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MULTIPYING POWERS
LESSON 15LESSON 15
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4422
BASEBASE
EXPONENTEXPONENT
POWERPOWER
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EXPONENT LAW 1EXPONENT LAW 1• PRODUCT OF POWERSPRODUCT OF POWERS
•nnaa x n x nbb = n = na+ba+b
•Multiplying Multiplying powers with powers with the same basethe same base
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nnaa x n x nbb = n = na+b a+b (Product of (Product of Powers)Powers)• To multiply powers with
the same base:same base:
• KEEP THE BASEKEEP THE BASE• ADD THE EXPONENTSADD THE EXPONENTS
• EXAMPLE:EXAMPLE:•3333 x 3 x 344 = 3 = 377
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WHY:• 33 = (3x3x3)• 34 = (3x3x3x3)
• Therefore:• 3333 x 3 x 344 = (3x3x3)
(3x3x3x3) = 3377
Meaning of the powerMeaning of the power
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EXAMPLE•4444 x 4 x 499
• Write as a single Power• Write the meaning• Give the value
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EXAMPLE:•4444 x 4 x 499 • Write as a Write as a single Powersingle Power•4444 x 4 x 499 = 4 = 41313
• Write the Write the meaningmeaning• (4x4x4x4)(4x4x4x4x4x4x4x4x4)• =(4x4x4x4x4x4x4x4x4x4x4x4x
4)• Give the Give the valuevalue• 413 = 67108864
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EXAMPE 2: 5
== -4 5( )x
-4 5( )2 -4
5( )3
(1.1)(1.1)33 (1.1) (1.1)22(1.1) = (1.1)(1.1) = (1.1)66
Exponent of 1 Exponent of 1 you don’t have you don’t have to show itto show it
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EXAMPLE 3 (4(433 x 4 x 455))33
= (43 x 45)(43 x 45)(43 x 45)
= (48)(48)(48)
= (48+8+8)=(424)SINGLE POWERSINGLE POWER
MEANINGMEANING
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EXPONENT LAW 2• POWER OF A POWER
•(x(xmm))nn = x = xmnmn
• Multiply the two powers Multiply the two powers together.together.
• Example:Example:
• (5(522))33 = 5 = 566
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EXAMPLE – (x(xmm))nn = x = xmnmn
(3(322 x 3 x 344))33
= (3= (366))33
= (3= (366)(3)(366)(3)(366))
= (3= (31818))
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EXAMPLE 2 – Find the value NOT THE SAME BASENOT THE SAME BASE
FIND VALUE FOR FIND VALUE FOR EACH POWEREACH POWER
FOLLOW FOLLOW ORDER OF ORDER OF OPERATIONSOPERATIONS
(4(433 x 5 x 522))33
=(64 x 25)=(64 x 25)33
=(1600)=(1600)33
= 4 096 000 000= 4 096 000 000