Question

The number which exceeds its positive square root by 12 is

A

9

B

16

C

25

D

12

Solution

The correct option is B 16 Let the required number is x So, x = √x+12 ⇒ x - 12 = √x ⇒ x2−25x+144=0 ⇒ x2−16x−9x+144=0 ⇒ x =16

Suggest corrections