12x²-20x - 4x(3x-5), 6x²y²+3xy²-3xy² - 3xy²(2x+y-1), x²-y² - (x+y)(x-y), 4x+12x+9 - (2x+3)(2x+3), x²+9x+20 - (x+5)(x+4),

MATH: Match the factors

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