若x+y=10,xy=15,求(x^2-y^2)^2的值?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 10:02:18
x){ѽB@H<~OGEnefY-O$VΆ45*B@P.5a`kf`kQbXI "hb3nsLu2*s.mJJ$G>Ɏ]Pu6<ٽ
4cs-ͥ iH
若x+y=10,xy=15,求(x^2-y^2)^2的值?
若x+y=10,xy=15,求(x^2-y^2)^2的值?
若x+y=10,xy=15,求(x^2-y^2)^2的值?
(x+y)^2=100
(x-y)^2=(x+y)^2-4xy=100-60=40
(x^2-y^2)^2
=(x-y)^2*(x+y)^2
=40*100
=4000
40√10
(x+y)^2=x^2+2xy+y^2=100
因为xy=15,所以x^2+y^2=70
(x-y)^2=x^2-2xy+y^2=40
(x^2-y^2)^2=(x+y)^2(x-y)^2=4000
若x^2+xy+y=14,y^2+xy+x=28,求x+y
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
若x+y=10,xy=15,求(x^2-y^2)^2的值?
3X^2+XY+Y=15 求XY.
若2x+y=0,求(x^2+xy+y^2)/(2xy-x^2)
若集合{x,xy,lg(xy)}={0,|x|,y},求log8(x^2+y^2)
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值
若y-x/xy=3,求分式2x+3xy-2y/x-2xy-y
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
若xy=2(x+y),求 (3x-5xy+3y)÷(-x+3xy-y) 的值
x^2+xy=12,xy+y^2=15,求(x+y)^2-(x+y)(x-y)
若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
若x-y=5,xy=6,求x^2-xy^2和x^2y+xy^2
若xy=-2,x+y=3,求代数式(3xy+10y)+5x- (2xy+2y-3x)的值
若xy=-2,x+y=3,求代数式(3xy+10y)+{5x-(2xy+2y-3x)}的值
若(3xy+2)^2+|7-x-y|=0,求代数式(5xy+10y)-[-5x-(4xy-2y+3x)]的值
若(3xy+2)+|7-x-y|=0,求代数式(5xy+10y)-[-5x-(4xy-2y+3x)]的值.
若x+y=5,xy=6,求x^2y+xy^2的值