Question

5. The roots of 2x2-bx+8=0 are imaginary, if
(A) 62< 64
(B) b2> 64
(C) b2= 64
(D) b = +8​

Answer 1

Answer:

d

Step-by-step explanation:

b=+8 this is the best way to get ans

Answer 2

Step-by-step explanation:

d<0

b2-4ac<0

b2-4*2*8<0

b2-64<0

b2<64