IBPS SO Prelims Exam Model Paper 4

I. 9x2 – 27x + 20 = 0
⇒ 9x2 – 15x – 12x + 20 = 0
⇒ 3x (3x – 5) – 4 (3x – 5) = 0
⇒ (3x – 5) (3x – 4) = 0
⇒ x =

4

3

,

5

3

II. 3y2 – 10y + 8 = 0
⇒ 3y2 – 4y – 6y + 8 = 0
⇒ y (3y – 4) – 2 (3y – 4) = 0
⇒ (3y – 4) (y – 2) = 0
⇒ y =

4

3

, 2Hence, relationship between x and y cannot be established.