化简y分之x加x分之y x分之一加y分之一化简
更新时间：2021-09-04 16:08:16 • 作者： •阅读 3309
x+y分之x+( - x - y)分之y 求化简
(x-y/x+y)-(x+y/x-y)=[(x-y)²-(x+y)²]/[(x+y)(x-y)]=-4xy/(x²-y²),请采纳,谢谢.
=根号下(y*x分之x^2+y^2+2xy)—根号下(x*y)分之x-根号下(x*y)分之y=根号下(x*y)分之(x+y)—根号下(x*y)分之x-根号下(x*y)分之y【分母一样】=0
x分之y减y分之x化简y/x-x/y=y平方/xy-x平方/xy=(y平方-x平方)/xy=(y-x)(y+x)/xy
化简(y分之x - x分之y)÷x分之x - y(x/y-y/x)÷(x-y)/x=(x²-y²)/xy * x/(x-y)=(x+y)(x-y)/xy * x/(x-y) 约分=(x+y)/y也可以写作:=x/y +1
y倍的x加y分之x减去x倍的x加y分之y 化简后等于什么呀?yx-x^2
x分之y 减 y分之x 怎么化简,最后答案等于多少?y/x -x/y = (y^2 - x^2) / xy
x减y分之x减x加y分之y等于什么?x-(-x)/y =x+x/y =(xy+x)/y =x(y+1)/y =x/[y/(y+1)].
化简﹙y分之x - x分之y﹚÷x分之x - y=(x2/xy-y2/xy)/(x-y)/x=(x+y)(x-y)/xy乘x/(x-y)=(x+y)/y
化简求值:(x+y分之x)+(x - y分之y) - (x的平方 - y的平方分之2xy),其中x=5.:(x+y分之x)+(x-y分之y)-(x的平方-y的平方分之2xy)=(X²+Y²)/ (X+Y)(X-Y))-2XY/(X²-Y²)=(X²+Y²)/ (X+Y)(X-Y))-2XY/(X+Y)(X-Y)=(X²+Y²-2XY)/(X+Y)(X-Y)=(X-Y)²/(X+Y)(X-Y)=(X-Y)/(X+Y)=(5-2)/(5+2)=3/7.
化简x分之y - y分之x - xy分之x²+y²的结果是??x-y分之x的平方+xy除以x-y分之xy=(x-y)分之x(x+y)除以(x-y)分之xy=y分之(x+y)