Question

If x=-2 is one solution of kr2+5x+2=0 then K = _ (dash)​

Answer 1

Answer:

k=2√2

Step-by-step explanation:

k2+5(-2)+2=0

k2-10+2=0

k2=8

k=√8

k=2√2

Answer 2

Answer:

K=2

Step-by-step explanation:

$k {x}^{2} + 5x + 2 = 0$

$k { (- 2)}^{2} + 5( - 2)+ 2 = 0$

$4k - 8 = 0$

$k = 2$