来自范昆的问题
X5-Y5(X的5次方减去Y的5次方)解法
X5-Y5(X的5次方减去Y的5次方)解法
1回答
2020-01-16 11:36
X5-Y5(X的5次方减去Y的5次方)解法
X5-Y5(X的5次方减去Y的5次方)解法
x^5-y^5=x^5-x^3*y^2+x^3*y^2-y^5=(x^5-x^3*y^2)+(x^3*y^2-y^5)=x^3(x^2-y^2)+y^2(x^3-y^3)=x^3(x+y)(x-y)+y^2(x-y)(x^2+xy+y^2)=(x-y)(x^4+x^3*y+x^2*y^2+x*y^3+y^4)我就做到这一步了,后头的...