Question

LI
a) A G
b) AEG
C) A>G
d) None of these
v) If the roots of the equation x² + 8x - (2k + 3) -0 differ by 2, then value of k is
a) -9
b) -6
c) 9
d) 6​

Answer 1

Answer:

-9

Step-by-step explanation:

suppose roots are m and m+2

as sum of roots= -b/a

and multiplication of roots =c/a

so

m+m+2=-8

2m+2=-8

m+1=-4

m=-5

second root is m+2

-5+2=-3.

now as we have to find value of k

m(m+2)= 2k+3

-5×-3=2k+3

-15-3=2k

k=-9