x=-3, x=-1 - 0=x²+4x+3, x=-5, x=-1 - 0=x²+6x+5, x=-1, x=-4 - 0=x²+5x+4, x=-4, x=-2 - 0=x²+6x+8, x=2, x=5 - 0=x²-7x+10, x=-10, x=-1 - 0=x²+11x+10, x=-5, x=-3 - 0=x²+8x+15, x=7, x=7 - 0=x²-14x+49,

Factorising quadratics simple version

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