[SPM AddMaths Quadratic Equation] Help me to solve this question plz

[maria]

[Far]

Hi Maria !

AddMaths Quadratic Equations Question

22. The quadratic equation k x^{2}+5 m x+9 k=0 has two equal roots. Given that k and m are positive, find the positive ratio k: m and solve the equation.
    Persamaan kuadratik k x^{2}+5 m x+9 k=0 mempunyai dua punca yang sama. Diberi k dan m adalah positif, cari nisbah positif k: m dan selesaikan persamaan itu.

AddMaths Quadratic Equation Solution

This is my solution

[maria]

ah, now i understand …thank you again