已知│x-y+1│与x2+8x+16互为相反数,求x2+2xy+y2的值.x2-4xy+4y2-10x+20y+25分解因式

已知│x-y+1│与x2+8x+16互为相反数,求x2+2xy+y2的值． 已知│x-y+1│与x2+8x+16互为相反数,求x2+2xy+y2的值.x2-4xy+4y2-10x+20y+25分解因式 已知（x+y-1）2与根号2x-y+4互为相反数,求x2+y3的平方根. 已知x与y互为相反数,且x-y=5.求x2+y2的值 X2-4X+4与|Y-1|互为相反数 则【X/Y-Y/X]/(X+Y)等于多少 1已知│x-y+1│与x2+8x+16互为相反数,求x2+2xy+y2的值2已知2a-3x+1=0,3b-2x-16=0,且a小于、等于4,4小于b,求x的取值范围.3当n为正整数时,代数式n(n+7)-(n-3)(n-2)的值是否能被6整除?理由? 已知│x+8│与│y+5.5│互为相反数,求x+y的值. 已知|x-y+1|与x^+8x+16互为相反数,求x^+2xy+y^的值.x^2+2xy+y^2 已知│2x-1│与根号(y-3)互为相反数,求根号(2x+y)的值 已知|x-y+2|与根号（x+y-1)互为相反数,求x平方-y平方 已知x-y+1的绝对值与x的平方+8x+16互为相反数,求x的平方+2xy+y的平方的值 已知丨x-y+1丨与x²+8x+16互为相反数,则x²+2xy+y²＝?急. 已知|x-y+1|与x²+8x+16互为相反数,求x²+2xy+y²的值 已知|x-y+1|与x²+8x+16互为相反数,求x²+2xy+y²的值? 已知|x-y+1|与x的2次方+8x+16互为相反数,求x的2次方+2xy+y的2次方的要全过程 已知根号下x-y+1与x的平方+8x+16互为相反数求x的平方+2xy+y的平方的值 已知x平方-6x+9与/y-1/互为相反数,计算(x/y-y/x)÷( x+y) 知│x-3y=6│与（x+2y+1）*(x+2y+1)互为相反数,则x= ,y=刚刚打错了正：已知│x-3y+6│与（x+2y+1）*(x+2y+1)互为相反数，则x= ,y=