Question

a) (4x − 6)(3y + 8) b) (7x + 9)(8y − 1) c) (x − y)(xy + y) d) (2xy − x)(3x − 2) e) (5y − 9)(4xy − 7) f) (−10xy + 3)(2x − 5y)​

Answer 1

a) (4x − 6)(3y + 8)

= 12xy + 32x - 18y - 48

b) (7x + 9)(8y − 1)

=56xy -7x + 72y -9

c) (x − y)(xy + y)

=x^2y - xy^2 + xy - y^2

d) (2xy − x)(3x − 2)

= 6x^2y - 3x^2 +4xy - 2x

e) (5y − 9)(4xy − 7)

= 20xy^2 + 36xy - 35y - 63

f) (−10xy + 3)(2x − 5y)

= -20x^2y + 50xy^2 +6x -15y