Maths Video Lesson 2 Revision eNotes Worksheet and Solutions
3^{rd} Year Worksheet 2 and Solutions 4
Example 1 & Example 2 4
Example 3 & Example 4 4
Example 5 & Example 6 5
Example 7 5
Example 8 & Example 9 5
Example 12 & Example 13 & Example 14 6
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3^{rd} Year Worksheet 2 and Solutions
Now at this stage you should have watched the free Lesson 2 maths tutorial on linear equations and read the mocks.ie lesson 2 revision notes. We are now bringing you a worksheet and solutions.
Factorise
5ab² 20a²b
= 5ab ( b 4a)
Write down the highest common factor.
3x² + 6x
= 3x ( x+2)
Example 3 Example 4
Factorise
2x (a–2b) – 1 (a2b)
= (a – 2b)(2x1)
Factorise
4x² + 3 zy 2 zx 6xy
=4x² 6xy + 3zy 2zx
=2x ( 2x – 3y)+ z (3y – 2)
=2x ( 2x – 3y) z (3y + 2)
= (2x – 3y)(2x – z)
Example 5 Example 6
Factorise
9a²  6b²
= 3a ( 3a – 2b²)
Factorise
9a² y ² 1
= (3ay)² – (1)²
= (3ay –1)( 3ay –1)
Example 7
Simplify
(3x+z)(6x2z) – (2y+z)(4y2z)

= 18x² 2z² –8y² + 2z²
= 18x² – 8y²
=2
=2
= (3x+2y)(3x2y)
Factorise
x² + 11x + 30 30
= (x+5) ( x+b) =1.30
= –1 . –30
= 2.15
= –2. –15
=3.10
= –3 . –10
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