1. The factorisation of 3x² + 10x + 8 is

2. The factorisation of 3x² - 16x + 16 is

3. The factorisation of 6x² - 5x - 6 is

4. The factorisation of 6 - x - 2x² is

5. If x² - x - 42 = (x + k)(x + 6), then k =

6. The value of 3.5 × 3.5 - 2.5 × 2.5 is

7. If (x - \(\frac{1}{x}\))² = x² + a + \(\frac{1}{x^2}\) then a =

8. If x = 2, y = -1 then the value of x² -+ 4xy + 4y² is

9. The quotient of 28x² + 14x is

10. The quotient of 12a⁸b⁸ + (- a⁶b⁶) is