问题标题：
【4x^2-y^2=x^2+x+1/4=4a^7-a^5=3a(m-n)+2b(n-m)=4mx^2-8m^2x+4m^3=x^3y-xy^3=因式分解,2x-7-1/7x^2=x^4-16=(x-2y)^2-14(x-2y)+49=(x-y)^3+4(y-x)=(x1+x2)^2-4x1-x2=】
更新时间：2024-04-28 06:58:22
问题描述：
4x^2-y^2=
x^2+x+1/4=
4a^7-a^5=
3a(m-n)+2b(n-m)=
4mx^2-8m^2x+4m^3=
x^3y-xy^3=
因式分解,
2x-7-1/7x^2=
x^4-16=
(x-2y)^2-14(x-2y)+49=
(x-y)^3+4(y-x)=
(x1+x2)^2-4x1-x2=
黄国建回答：
4x^2-y^2=(2x+y)(2x-y)x^2+x+1/4=(x+1/2)^24a^7-a^5=a^5(2a+1)(2a-1)3a(m-n)+2b(n-m)=(3a-2b)(m-n)4mx^2-8m^2x+4m^3=4m(x-m)^2x^3y-xy^3=xy(x+y)(x-y)因式分解,2x-7-1/7x^2=-(x^2-14x+49)/7=-(x-7)^2/7x^4-16=...
