(a方+b方-1)方-4a方b方=a^4+b^4-2a^2b^2-2(a^2+b^2)+1=(a^2-b^2)^2-2(a^2-b^2)+1-4b^2=(a^2-b^2-1-2b)(a2-b^2-1+2b)=(a-b-1)(a+b+1)(a-b+1)(a+b-1)(x方-x)方-14(x方-x)+24=(x^2-x-2)(x^2-x-12)=(x-2)(x+1)(x-4)(x+3)...