Question

x^2 + 25x + 156 = 0​

Answer 1

x² + 25x + 156 = 0

or, x²+13x+12x+156 =0

or, x(x+13)+12(x+13) =0

or, (x+13)(x+12) =0

or, x = -13, -12 Ans.

I hope this helps.