Algebraic Fraction and Formulas

1
Chapter 3 Algebraic Fraction and Formulars

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• ??? (6)
• ??? (8)
• ??? (9)
• ???(12)
• ???(13)

2
Definition

• Both numerator and denominator are polynomials.
  Denominator contain variable(???)
• Note ???
• Because and are not the same.

3
Multiplication of Algebraic Fractions

• In multiplication of fractions, we multiply the
  numerators and denominators separately to get the
  product.
• Example

• The same method can be applied to the
  multiplication of algebraic fractions.
• Example

4
Division of Algebraic Fractions

• The principle of division of algebraic fractions
  is the same as that of fractions.
• Example

5
Addition of Algebraic Fractions

• For algebraic fractions, if the denominators are
  the same, we can perform the addition directly in
  the same way.
• However, if the denominators of the algebraic
  fractions are not the same, we have to find
  lowest common multiple (L.C.M.) of the
  denominators first.
• Example

6
Subtraction of Algebraic Fractions

• For algebraic fractions, if the denominators are
  the same, we can perform the subtraction directly
  in the same way.
• However, if the denominators of the algebraic
  fractions are not the same, we have to find
  lowest common multiple (L.C.M.) of the
  denominators first.
• Example

7
Formula
A BH If B 4, H 6 A BH 4 X 6
24 In fact, when the values of two variables are
given, the values of the remaining variable is
fixed and can be found by substitution.
8
Formula

• Example
• Given a formula if and
  , find the value of .
• Solution
• When and ,

9
Change of Subject