Question

Evaluate the expression (4x^3y^-2)(3x^-2y^4) for x = –2 and y = –1.

Answer 1

3x−2y)(4x+3y)

It can be written as =3x(4x+3y)−2y(4x+3y)

By further calculation =12x

2

+9xy−8xy−6y

2

So we get =12x

2

+xy−6y

2