Question

for what value of k are the roots of quadratic equation( k - 12 )x square + 2( k- 12) x + 2=0equal ?​

Answer 1

roots are equa

2α = -2(k-12)/k-12 = -2

α = -1

α^2 = 2/(k-12)

1 = 2/(k-12)

k - 12 = 2

k = 14