Add ( -3x² + 6y² – 5xy) to the product of ( x + y ) and ( 3x - y ).
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Answer:
(x+y)(3x-y)=
x(3x-y) +y (3x-y)
3x²-xy+3xy-3y²-3x²+6y²-5xy
3x²-3x²-xy -5xy-3y²+6y²+3xy -5xy
0-4xy +3y²-2xy
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