**(i) x ^{2} + 6x – 7**

**(ii) y ^{2} + 7y – 18**

**Answer :**

**(i) x**^{2} + 6x – 7

^{2}+ 6x – 7

x^{2} + 7x – x – 7

Take out common in all terms we get,

x(x + 7) – 1(x + 7)

(x + 7) (x – 1)

**(ii) y**^{2} + 7y – 18

^{2}+ 7y – 18

y^{2} + 7y – 18

y^{2} + 9y – 2y – 18

Take out common in all terms we get,

y(y + 9) – 2(y + 9)

(y + 9) (y – 2)

**More Solutions:**

- Factorise 2a2b2 – 7ab – 30
- Factorise (x – y)2 – 6(x – y) + 5
- Factorise 4(a – 1)2 – 4(a – 1) – 3
- Factorise 3 – 5a – 5b – 12(a + b)2
- Factorise (x + 4)2 – 5xy -20y – 6y2
- Factorise 4(2a – 3)2 – 3(2a – 3) (a – 1) – 7 (a – 1)2
- Factorise (2×2 + 5x) (2×2 + 5x – 19) + 84
- Factorise x2 – 8x + 7
- Factorise y2 + 7y – 18
- Factorise a2 – 3a – 54