(x-2)(x+1) - x² - x - 2, (x+1)(x+4) - x² + 5x + 4, (x+9)(x-7) - x² + 2x -63, (x+4)(x-8) - x² - 4x - 32, (x+11)(x+11) - x² + 22x + 121, (x-6)(x-6) - x² - 12x + 36, (x+12)(x-1) - x² +11x - 12, (x+3)(x-7) - x² - 4x -21, (x+15)(x+15) - x² + 30x + 225, (x+9)(x+9) - x² + 18x + 81, (x+5)( x-4) - x² + x - 20, (x+4)(x+4) - x² + 8x + 16, (x-14)(x-14) - x² - 28x + 196, (x-3)(x-2) - x² - 5x + 6, (x+6)(x-3) - x² + 3x -18, (x-9)(x+2) - x² - 7x - 18,

Factoring Quadratic Trinomials (a = 1)

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