Question

The simplified value of 16x3y2 X 8-9 x3y-2 is
:) 2xy
(b) xy/2
(c) 2​

Answer 1

Answer:

Treating it as a quadratic in y, we get

y

2

+y(2x+m)+(2x−3)=0

D=(2x+m)

2

−4(2x−3)

=4x

2

+4mx+m

2

−8x+12

=4x

2

+4x(m−2)+m

2

+12

=[4x

2

+4x(m−2)+(m−2)

2

]+(m

2

+12)−(m−2)

2

=[4x

2

+4x(m−2)+(m−2)

2

]+[12+4m−4]

=(2x+m−2)

2

+[12+4m−4]

Hence,

4m=−8

⇒m=−2.