xy)
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 19:01:37
xyxy
xx+xy=xy,xy染色体吧
xy×(xy)²-3xyx^2+y^2-3xy=4x^2+y^2+2xy-5xy=4(x+y)^2-5xy=43^2-5xy=45xy=9-45xy=5xy=1这要是问什么啊
(-3xy+2xy)-(4xy+xy)(-3xy+2xy)-(4xy+xy)=-xy-5xy=-6xy-6xy去括号后合并同类项原式=-3xy+2xy-4xy-xy=(-3+2-4-1)xy=-6xy先括号内化简,再去括号相减(-3xy+2
xy^5-xy^4+xy-x因式分解分组分解法原式=x(y^5-y^4)+x(y-1)=xy^4(y-1)+x(y-1)=x(y^4+1)(y-1)
3xy-4xy-(-2xy)提公因式xy,用结合律求3xy-4xy-(-2xy)=(3-4+2)xy=xy3xy-4xy-(-2xy)=3xy-4xy+2xy=xy3xy-4xy-(-2xy)=-xy+2xy=xy如果帮到你,请记得采纳,O
1.3xy-4xy-(2xy)是1.3还是第一题=(1.3-4-2)xy=-4.7xy-3xy后面的括号有用吗?问题写清楚了
xy,xy,xx+xy=?=xy
3xy-3xy-xy+2yx3xy-3xy-xy+2yx=-xy+2xy=xy你这全是同类项原试=xy(3-3-1+2)=xy结果为xy。3xy-3xy=0xy=yx2xy-yx=xy(3-3-1+2)xy=xy
4xy+6xy-3xy=?7xy
3xy-4xy-(-2xy)等于xy
2xy.(-3xy)÷(xy)等于负6.x.y
2xy-xy-(-3xy)=4xy4xy4xy
若xy∵xy0,x
已知XYX√(Y/X^2)因XY0,所以X所以X√(Y/X^2)=X√Y/(-X)=-√Y
【x(xy-xy)-y(x-xy)】÷3xy2xy
当xyxyx乘y的平方>0,x>0,则y根号x乘y的平方=-xy根号-y
已知xy(1)x=±1,y=±2又xy已知xy<0,x<y且lxl=1,lyl=2x=-1,y=2(2)Ix一1/3l十(xy一1)的平方=1+1/3+9=10又三分之一根据xyIx一1/3l十(xy一1)=10点25
当xyxy<0,√[(xy)²]=|xy|=-xy
若xyxz>0大于>