SOLUTION: How do you Factor the polynomial 15x – 3xy + 20 – 4y by GROUPING? whats the factored answer?

SOLUTION: How do you Factor the polynomial 15x – 3xy + 20 – 4y by GROUPING? whats the factored answer?

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Question 163026: How do you Factor the polynomial 15x – 3xy + 20 – 4y by GROUPING? whats the factored answer?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
first, you group __ (already conveniently arranged) (15x-3xy)+(20-4y)

then factor __ 3x(5-y)+4(5-y)

then rearrange (by un-distributing) __ (3x+4)(5-y)
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