3(2x+3) - 6x+9, 4x(x-3) - 4x2-12x, 2(x2+4) - 2x2+8, 5(x2-2) - 5x2-10, 4(x+6) - 4x+24, 2(2x-1) - 4x-2, 3x(4x+5) - 12x2+15x, 20(x+5) - 20x+100, 5(4x-3) - 20x-15, 4(2x-5) - 8x-20, 3(3x+4) - 9x+12, 2x(2x + 3) - 2x2+6x, 5(x-2) - 5x-10, 3(2x+5) - 6x+15, 4(5x-2) - 20x-8, 2(2x+7) - 4x+14, 3x(2x+4) - 6x2+12x, 4(2x+5) - 8x+20, 2(3x+4) - 6x+8, 2x(2x+5) - 4x2+10x,

Factorising single brackets matching

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