(x+10)(x-6)-(x-1)(x+1)=1
(x+10)(x-6)-(x-1)(x+1)=1 (x²-6x+10x-60)-(x²+1x-1x-1)=1 x²-6x+10x-60-x²-1x+1x+1=1 -6x+10x-60x+1=1 -6x+10x-60x=1-1 -56x=0 x=0÷(-56) x=0