ICSE Class 10CISCE
Share
Notifications

View all notifications

Solve : X2 – 11x – 12 =0; When X ∈ N - ICSE Class 10 - Mathematics

Login
Create free account


      Forgot password?

Question

Solve : x2 – 11x – 12 =0; when x ∈ N

Solution

x2 – 11x – 12 =0

`=> x^2 - 12x + x - 12 = 0`

=> x(x - 12) + 1(x - 12) = 0

=> (x - 12)(x + 1) = 0

then x = 12 and x = -1

Since `x in N` then x = 12

  Is there an error in this question or solution?
Solution Solve : X2 – 11x – 12 =0; When X ∈ N Concept: Solutions of Quadratic Equations by Factorization.
S
View in app×