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# Operation of multiplications of algebraic forms

## on Aug 20, 2013

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## Operation of multiplications of algebraic formsPresentation Transcript

• Operation Of Algebraic Form
• I. Operation Of Addition and Subtraction The Properties of Addition Operation  a) Commutative : a + b = b + a  b) Distributive : i) a b + a c = a( b + c ) ii) a b – a c = a ( b – c )  c) Associative a + b + c = ( a + b ) + c = a + ( b + c ) = ( a + c ) + b Before discuss about multipication let’s memories about addition and subtraction
• Examples 
• solution  a. (3a- 2 ) + ( 7a + 6) = (3a + 7a) + ( -2 +6) = 10 a + 4 Vertical method : 3a - 2 7a + 6 + ------------ 10a + 4
• Find the others solutions 
• c. 2a + 3b and 3a- 2b
• d. 5m -7n + 4 and 2m+3n -9
• 2. Subtract 
• Solution  a. 4b- 7 from 5b + 2  ( 5b + 2 ) – (4b- 7) = (5b- 4b) + (2-(-7) ) = b + 9 Vertical method 5b + 2 4b – 7 – _______ b + 9
• Find The Others solutions !  Who would like to try to fin solution ?
• I have to be a success student
•  Now, let’s discuss about………..
• II. Multiplication 
• Exercises ( do by discuss) 
• Remember  Be a student so long as you still have something to learn, and this will mean all your life. ~Henry L. Doherty (“Jadilah penuntut ilmu selama kau masih memiliki sesuatu untuk dipelajari, dan hal ini akan menjadi tujuan seluruh hidupmu”)  I am learning all the time. The tombstone will be my diploma. ~Eartha Kitt (“Aku belajar setiap waktu. Batu nisan akan menjadi ijazahku”.)