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几道分解因式x^2-8xy+16y^2+6x-24y+9(x^2+2y+1)^2+10y+5+5x^2x^2-yx^2+xy-x+y-y^2

题目详情
几道分解因式
x^2-8xy+16y^2+6x-24y+9
(x^2+2y+1)^2+10y+5+5x^2
x^2-yx^2+xy-x+y-y^2
▼优质解答
答案和解析
1.原式=x^2+(6-8y)x+16y^2-24y+9
=x^2+(6-8y)x+(4y-3)^2
=(x-4y+3)^2
2.原式=
(x^2+2y+1)^2+5(x^2+2y+1)
=(x^2+2y+1)(x^2+2y+6)
3.原式=(1-y)x+(Y-1)x-y(y-1)
=(y-x^2+x)(y-1)