Question

if 2x2 + 6x + 8 = 0 to have No real roots . -8<b<4 ,then find the interval b.​

Answer 1

Answer:

First inequality is 4x+3≥2x+17 

⇒2x≥14

⇒x≥7

Now, consider second inequality,

⇒3x−5<−2

⇒x<1

The two equations do not have a coinciding values. Thus, it has no solution