5x²+6x+1=(5x+1)(x+1)10x²+9x-1=(10x-1)(x+1)5x²+7x+2=(5x+2)(x+1) x²-4x-12=(x-6)(x+2)
5x²+6x+1 =(5x+1)*(x+1)10x²+9x-1=(10x-1)*(x+1) 5x²+7x+2=(5x+2)(x+1) x²-4x-12=(x+2)(x-6)
