Question

x1 -3b = x+b =
with formula pls​

Answer 1

Answer:

The discriminant of the quadratic equation 2x

2

+6x+b=0 is given by D=36−8b>0.

Therefore, the given equation has real roots.

we have,

x

2

x

1

+

x

1

x

2

=

x

1

⋅x

2

x

1

2

+x

2

2

=

x

1

⋅x

2

(x

1

+x

2

)

2

−2x

1

x

2

=

(b/2)

(−3)

2

−2(b/2)

=

b

18

−2<−2 [∵b<0]