Question

Which is a factor of 5xy – 40x – 15y + 120 ?
Answer
x – 4

y – 8

2

x + 6

Answer 1

5x(y-8)-15(y-8)
(y-8)(5x-15)
(y-8)5(x-3)
5(y-8)(x-3)

Answer 2

5 is a factor
y-8 is a factor
x-3 is a factor

Answer 3

the only of the above choices that i see is y-8