Question

Select the factors of xy − 4x + 2y − 8.

(x − 2)(y + 4)

(x + 2)(y − 4)

(x − 4)(y + 2)

(x + 4)(y − 2)

Answer 1

the second set, (x+2) and (y-4)

Answer 2

(x+2)(y-4) - we have to FOIL the answers to check if they produce the solution. So do the first two (x) * (y) then the outside (x) * (-4) then the inside (2) * (y) and then the last (2) * (-4) - it comes out to be xy - 4x +2y - 8

Answer 3

yes the second is right