3 years ago

Which is a factor of 5xy − 40x − 15y + 120? A. 2 B. y − 8 C. x − 4 D. x + 6

1 answer:

5 0

Upon slight rearranging:

5xy-15y-40x+120, now factor 1st and 2nd pair of terms

5y(x-3)-40(x-3) which is equal to:

(5y-40)(x-3) if we factor the first parenthetical term as well

5(y-8)(x-3)

So (y-8) is a factor

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