Links to other Year 9 Revision exercises - Ex 1.1 | Ex 1.2 | Ex 1.3 | Ex 1.4 | Ex 1.5 | Ex 1.7 | Ex 2.1 | Ex 2.2 | Ex 2.3 | Ex 2.4 | Ex 3.1 | Ex 3.2 | Ex 3.3 | Ex 3.4 | Ex 3.5 | Ex 4.1 | Ex 4.2 | Ex 4.3 | Ex 4.4 | Ex 4.5
These answers are given merely to help with revision. In order to get full marks all working out must be shown.
| 1 | a) | 3 − 3x | |
| b) | a2 + 3ab + 2b2 | ||
| c) | x2 − 9x + 18 | ||
| 2 | a) | x2 + 4x − 21 | |
| b) | 3x2 − 7x − 20 | ||
| c) | 15x2 − 7x − 2 | ||
| 3 | a) | x2 + 10x + 25 | |
| b) | 4x2 − 9y2 | ||
| c) | 2x2 + 6x + 2 | ||
| 7 | a) | 4(a + 3) | |
| b) | x(x − 5) | ||
| c) | b2(b − 3) | ||
| 8 | a) | (x + 9)(x + 2) | |
| b) | (x − 2)(x − 4) | ||
| c) | (x − 5)2 | ||
| 9 | a) | (x − 5)(x + 3) | |
| b) | (x + 4)(x − 2) | ||
| c) | (3 + x)(6 + x) | ||
| d) | (7 − x)(2 + x) | ||