Question

The Values of k for quadratic
equation 2x^2+ kx +3=0 so that
they have two equal roots is___​

Answer 1

Answer:

k = plus minus 2 root 3.

Step-by-step explanation:

this is find out by equation as b^2_4ac = 0 ( when there are two equal roots)..

then putting the value over this equation and find the value of k.............

Answer 2

Answer:

$product \: of \: roots = \: constant \\ \times( coeffiecent \: of \: {x}^{2} ) \\ = 3 \times 2 = 6 \\ sum \: of \: roots \: = coefficient \\ of \: x = k \\ let \: two \: roots \: be \: \alpha \: and \: \beta \\ and \: \: \alpha = \beta \\ then \\ \alpha \: + \beta = k \\ \alpha \beta = 6 \\ then \: \alpha = 2 \: \: \: \beta = 3$