Question

what is the nature of roots of the quadratic equation 4x square - 12 x + 9 = 0​

Answer 1

4x^2 -12x +9 =0

or, 4x^2 -( 9+4)x +9 =0

or, 4x^2 -9x-4x +9= 0

or, x(4x-9) - 1(4x-9) =0

or, (4x-9) (x-1) =0

4x-9 =0. x=1

x=9/4