Question

The value
equations
k
of for which - 4 is root of the quadratic
x²-x-(2K+2) = 0 is​

Answer 1

Hello...

Since -4 is the root of the equation.

So ,

f(-4) = 0

(-4)²-(-4)-(2k+2) =0

16+4-2k-2 =0

-2k+18 = 0

-2k = -18

2k = 18

k = 9 ans.

Hope it helps!

Answer 2

Answer:

here Is Your Answer

Step-by-step explanation:

$(- 4) {?}^{2} - 4 - (2k + 2) = 0 \\ 16 + - 4 - 2k - 2 = 0 \\ 10 - 2k = 0 \\ k = 5$