X6-Y6-2X3+1 X2(X-1)2 +32(X-X2)+60 (X+1)(X+3)(X+5)(X+7)+15 X后面的2都是平方,还有6次方
问题描述:
X6-Y6-2X3+1 X2(X-1)2 +32(X-X2)+60 (X+1)(X+3)(X+5)(X+7)+15 X后面的2都是平方,还有6次方
是这三题。。在线等。。
X6-Y6-2X3+1
X2(X-1)2 +32(X-X2)+60
(X+1)(X+3)(X+5)(X+7)+15
答
x^6-y^6-2x^3+1=x^6-2x^3+1-y^6=(x^3-1)^2-(y^3)^2=(x^3-1-y^3-1)(x^3-1+y^3)x^2(x-1)^2 +32(x-x^2)+60=x^2(x-1)^2 -32x(x-1)+60=[x(x-1)-30][x(x-1)-2]=(x^2-x-30)(x^2-x-2)=(x-6)(x+5)(x-2)(x+1)(x+1)(x+3)(x+5)(x...