x^2-y^2-2x+14(x+y)^2-4(x+y)+1

来源：学生作业帮助网编辑：作业帮时间：2024/11/23 15:45:19

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x^2-y^2-2x+14(x+y)^2-4(x+y)+1
x^2-y^2-2x+1
4(x+y)^2-4(x+y)+1

x^2-y^2-2x+14(x+y)^2-4(x+y)+1
x^2-y^2-2x+1
= (x^2 -2x +1) - y^2
= (x-1)^2 - y^2
=(x-1+y)(x-1-y)
4（x+y)^2-4(x+y)+1
=[2(x+y)-1]^2
=(2x+2y-1)^2

能说得清楚一点吗

1. = X ^2-2X+1-Y^2 =(X-1)^2-Y^2 =(X-1-Y)(X-1+Y)
2. =[2(x+y)]^2-4(x+y)+1 = [2(x+y)-1]^2

x^2-y^2-2x+1=(x^2-2x+1)-y^2=(x-1)^2-y^2=(x+y-1)(x-y-1)
4(x+y)^2-4(x+y)+1=[2(x+y)]^2-1

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 化简y(x+y)+(x+y)(x-y)-x^2 因式分解x(x+y)(x-y)-x(x+y)^2 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) x+y)^2-14(x+y)+49 (x-y)^2+5(x-y)-14 x^2(x-y)+(y-x) x(x-y)2-(y-x)3 【(x-y)^2+(x+y)(x-y)】除以 2x 计算:y-x分之x+y+x-y分之y-y-x分之2x-y [(x-y)²+(x+y)(x-y)]除以2x [(x-y)^2-(x+2y)(x-2y)]/y [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x 计算[2x^2-(x+y)(x-y)][(-x-y)(y-x)+2y^2]