exponentiation of algebraic expressions
DESCRIPTION
TRANSCRIPT
( O P E RA S I P E M A N G KATA N B E N T U K A L JA B A R )
EXPONENTIATION OF ALGEBRAIC
EXPRESSIONS
REMEMBER
• that’s mean 2x2x2• that’s mean 3x3
So ………..• that’s mean xxx• ()that’s mean () x () =
be careful :• (- 2 ‡ - (2 ) because
(- 2 = 4 and - (2 ) = - 4
REMEMBER OF PROPERTIES OF EXPONENTIATION
•()³ = •()³ =
EXCERCISESFind the exponentiation products of the
following algebraic expression(Tentukanhasiloperasipangkatdaribentukaljab
arberikutini)1. ()³ =………2. - ( 2)² = …….3.( - 3 )² =………4. (- 4)³ =………5. - ( 2)² =………..6. (- )² =………..
SOLUTION
1. ()³ =………
(3)³ x ()³ = 27
Can you do like that example with others exercises ?please do it……..
(kalau belajarnya sedikit-sedikit, kalau rajin, kalau tekun dan sering latihan……)
BAGAIMANA ? MATEMATIKA ITU MUDAH KAN ?
NOW, LET’S DISCUSS ABOUT :
• Exponentiation of Two Terms (binomial)(OperasiPemangkatanSukuDua )
Examples :1). ( a + b )² = (a + b)(a + b) = 2) (a – b )² = ( a - b )(a – b ) =
• And then…...3) ( a + b )³ = ( a + b)(a + b )( a + b )=() )( a + b )= a³ + + + ² + ² + b³= a³ + 3 + 3 ² + b³
4) ( = + 4 + 6 +
5) = + 5 10 + 10 + 5 +
LOOK AT THE EXPONENTIATION PRODUCTS ABOVE
• Exponent a from the left to the right decreases by 1
and ( pangkat dari a menurun mulai dari kiri ke kanan)• Exponent b from the left to the right increases by
1( pangkat dari b bertambah/ naik mulai dari kiri ke kanan
PASCAL’S TRIANGLE
LOOK AT PASCAL’S TRIANGLE ABOVE
• The coefficients of the terms of exponentiation products are called BINOMIAL COEFFICIENTS and can be determined by Pascal’s Triangle.• Example : = 1 1 = + 1…….1 = + 2 + 1…2…1And so on………
EXERCISES
1. Find the exponentiation products of the following algebraic expressions :• a). b) c)) d)2. Expand and simplify
SOLUTION
• 1 a) ). =
• 2 a). = )() = . + . + . + . = + + + 25 = + + 25
DO IT BY YOURSELF
• But you must ask someone if you still confused• Berusahalah agar kalian…..
KARENA…..
• Math is magic
BUKU SUMBER
• Pelajaran MATEMATIKA BILINGUAL• Untuk SMP/MTs• Penulis : - Cucun Cunayah- Ahmad Zaelani- Suwah Seembiring
•Copyright 2010 pada CV YRAMA WIDYA
TERIMA KASIH…..THANK YOU…..
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