The number of real solutions of the equation, x 2 - x - 12 = 0 is:

The number of real solutions of the equation, x2-x-12=0 is:
  1. 2
  2. 3
  3. 1
  4. 4

Solution

We have, x2-x-12=0

⇒x2-4x+3x-12=0

⇒x+3x-4=0

⇒x=4 as x≠-3

⇒x=±2

Hence, number of real solution is 2.

Asked in: JEE Main 2021 (25 Jul Shift 2)

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