maths
posted by melissa .
im writting a math examination tomorrow and i don't know anything im learning my heart out help!4xy5+5x4y

4XY  5 + 5X V 4Y.
Form 2 factorable pairs by grouping:
(4XY  4Y) + (5X  5),
Factor each binomial:
4Y(X  1) + 5(X  1),
(X  1)(4Y + 5).
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