Question

Please answer correctly

Answer 1

The answer is 6 and -6

Explanation:

The given equation is

`x^2 - kx + 9 = 0 ... (1)`

where a = 1. b = -k, c = a

since the equation (1) has equal roots

`\Rightarrow b^2 - 4ac = 0 \\ewline\\\Rightarrow (-k)^2 - 4(1)(9) = 0\\ \\ewline\\\Rightarrow (k)^2 - 36 = 0 \\ewline\\\Rightarrow k^2 = 36 \\ewline\\\Rightarrow k = \pm 6`

Hence volume of k = 6, -6