Question

4x^2-kx+9=0 find the value of k

Answer 1

Answer:

4x^2+9

k= ______

x

Step-by-step explanation:

If x =1 then k=13

If x =2 then k=25/2

and so on....

Answer 2

HERE IS YOUR ANSWER MATE.....;

LET ASSUME D =0

SO,

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

$( - k) {}^{2} - 4 \times 4 \times 9 = 0$

$k {}^{2} - 144 = 0$

$k \: = \sqrt{144}$

$k = 12$

HOPE IT'S HELPFUL.....:-)