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​Quadratic Equations - Factorising: Quiz 2

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

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