2k^2 + 9k = - 7 using quadratic equation

Answer: (k+1) (2K+7)

Step-by-step explanation:

Using the quadratic formula

X=-b±-√b^2-4ac/2a

ax^2+bx+c=0

2k^2+9k+7=0

In this case a=2, b=9, c=7

-9+-√9^2-4 (2) (7) / 2 (2)

(-9+√25) / 4=-9+5/4=-1

(-9-√25) / 4=-14/4 = -7/2

X=-1, X=-7/2

So (K+1) (k+7/2)

So (k+1) (2k+7)