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Quadratic Equations - Factorising: Quiz 2 - Answers
Quadratic Equations - Factorising: Quiz 2 - Answers
1) (x + 3)(x – 3)
2) (x + 6)(x – 6)
3) (x + 9)(x – 9)
4) (7 + x)(7 – x)
5) (2x + 4)(2x – 4)
6) (x + y)(x – y)
7) (3x + 5y)(3x – 5y)
8) (x2 + y3)(x2 – y3)
9) (6x2y + 7z4n3) (6x2y – 7z4n3)
Working
Questions
Factorise the following quadratics.
1) x2 – 9
2) x2 – 36
3) x2 – 81
4) 49 – x2
5) 4x2 – 16
6) -y2 + x2
7) 9x2 – 25y2
8) x4 – y6
9) 36x4y2 – 49z8n6