x²-3xy+2y²

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x²-3xy+2y²x²-3xy+2y²x²-3xy+2y²x²-3xy+2y²=(x-y)(x-2y)

x²-3xy+2y²
x²-3xy+2y²

x²-3xy+2y²
x²-3xy+2y²
=(x-y)(x-2y)