1. The factorisation of x² + 8x + 16 is

2. The factorisation of 4y² - 12y + 9 is

3. The factorisation of 49p² - 36 is

4. The factorisation of y² - 7y + 12 is

5. The factorisation of z² - 4z - 12 is

6. The factorisation of am² + bm² + bn² + an² is

7. The factorisation of (lm + l) + m + 1 is

8. The factorisation of (l + m)² - 4lm is

9. The factorisation of
1 + p + q + r + pq + qr + pr + pqr is

10. The value of
0.645 × 0.645 + 2 × 0.645 × 0.355 + 0.355 × 0.355 is