Question

15. Find the value of k for which the equation (k - 12)x+ + 2(k - 12)x + 2 = 0 has
equal roots.​

Answer 1

Answer:

14

Step-by-step explanation:

equation will have equal roots when

${b}^{2} - 4ac = 0$

${(2(k - 12))}^{2} = 4 \times (k - 12) \times 2$

Simplifying we get

$k - 12 = 2 \\ k = 14$