Question

TagE os 11. f(x)=x°- 2x – 8 and g(x)= x² + 2x+4. Let Q,07,...,Az are the roots of equation f(x) = 0 then the value of g(0)g(az)...g(a) is (A) 1000 (B) 1600 (C) 1400 (D) None of these.​

Answer 1

Step-by-step explanation:

2x

2

−Kx+x+8=0

2x

2

+(1−K)x+8=0

For real and equal roots

D=0

(1−K)

2

−4.2.8=0

K

2

−2K−63=0

(K−9)(K+7)=0

K=9 or −7