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JSS2: MATHEMATICS - 2ND TERM

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  1. Transactions in the Homes and Offices | Week 1
    5 Topics
    |
    1 Quiz
  2. Expansion and Factorization of Algebraic Expressions | Week 2
    4 Topics
    |
    1 Quiz
  3. Algebraic Expansion and Factorization of Algebraic Expression | Week 3
    4 Topics
    |
    1 Quiz
  4. Algebraic Fractions I | Week 4
    4 Topics
    |
    1 Quiz
  5. Addition and Subtraction of Algebraic Fractions | Week 5
    2 Topics
    |
    1 Quiz
  6. Solving Simple Equations | Week 6
    4 Topics
    |
    1 Quiz
  7. Linear Inequalities I | Week 7
    4 Topics
    |
    1 Quiz
  8. Linear Inequalities II | Week 8
    2 Topics
    |
    1 Quiz
  9. Quadrilaterals | Week 9
    2 Topics
    |
    1 Quiz
  10. Angles in a Polygon | Week 10
    4 Topics
    |
    1 Quiz
  11. The Cartesian Plane Co-ordinate System I | Week 11
    3 Topics
    |
    1 Quiz
  12. The Cartesian Plane Co-ordinate System II | Week 12
    1 Topic
    |
    1 Quiz



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The L.C.M of two algebraic terms is the smallest common multiple they have. 

Examples 

Find the LCM of 

(a) \( \scriptsize a \: and \: 6 \)

(b)  3x and 4x

(c)  2a2, 8a and 12a 

Solution 

(a) \( \scriptsize a \: and \: 6 \)

Screen Shot 2021 05 06 at 4.12.39 PM

LCM of a and 6

= \( \scriptsize 2 \: \times \: 3 \: \times \: a = 6a \)

(b)  3x and 4x

Screen Shot 2021 05 06 at 4.16.10 PM

LCM of 3x and 4x

= \( \scriptsize 2 \: \times \: 2 \: \times \: 3 \: \times \: x = 12x \)

(c)  2a2, 8a and 12a 

Screen Shot 2021 05 06 at 4.18.01 PM

LCM of 2a2, 8a and 12a

= \( \scriptsize 2 \: \times \: 2 \:\times \: 2 \: \times \: 3 \: \times \: a \: \times \: a = 24a^2 \)

Evaluations 

Find the LCM of the following 

  1. 4x and 6x
  2. mn2 and m2
  3. 5b and 10b2
  4. 8y2, 12y and 24xy
  5. 6ab and 8a2

Answer 

1. 12x

2. m2n2

3. 10b2

4. 24xy2

5. 24a2

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