Question

x^2 + x- 12 = 0 solve in quadratic equation answer=
-4,3
not only for icse students​

Answer 1

Answer:

Step-by-step explanation:

x^2 + x- 12 = 0,

x^2+4x-3x-12,

x(x+4)-3(x+4),

(x-3)(x+4)=0,

Now we equate the factors to zero.

x-3=0,

x=3,

x+4=0,

x=-4,proved.

hope it helps you.

Answer 2

Answer:

x = -4 , 3

Solution:

Here,

The given quadratic equation is ;

=> x² + x - 12 = 0

=> x² + 4x - 3x - 12 = 0

=> x(x + 4) - 3(x + 4) = 0

=> (x + 4)(x - 3) = 0

=> x = - 4 , 3

Hence,

Required answer is :

x = -4 , 3