(x+3)(x-3) - x²-9, ab(a+b) - a²b+ab², 2(x+5)(x-5) - 2x²-50, 3xy(1-4x) - 3xy-12x²y, (x+1)(x-6) - x²-5x-6, x(x-20) - x²-20x, 2(x+5)(x-2) - 2x²+6x-20, (2x+1)(x-6) - 2x²-11x-6, (x-2)(x-3) - x²-5x+6, 5(x+1)(x-1) - 5x²-5, (3x+2)(2x-3) - 6x²-5x-6, 3(x2+10) - 3x²+30,

factorising, +bracket first, numerical order if same sign

by Anonymous

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