The roots of ax² + bx + c = 0, a 0 are real and unequal, if (b² - 4ac) is

If the equation x² + 2(k + 2)x + 9k = 0 has equal roots then k = ?

If the equation 4x² - 3kx + 1 = 0 has equal roots then k = ?

In the equation ax² + bx + c = 0, it is given that D = (b² - 4ac) > 0. Then, the roots of the equation are

The roots of the equation 2x² - 6x + 7 = 0 are