已知:(x-7)²+121,(y+1)³=-0.064,求根号x-2-根号x+10y+³根
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/01 13:57:16
已知:(x-7)²+121,(y+1)³=-0.064,求根号x-2-根号x+10y+³根号245y的值
已知:(x-7)²=121,(y+1)³=-0.064,求根号x-2-根号x+10y+³根号245y的值
已知:(x-7)²=121,(y+1)³=-0.064,求根号x-2-根号x+10y+³根号245y的值
![已知:(x-7)²+121,(y+1)³=-0.064,求根号x-2-根号x+10y+³根](/uploads/image/z/15420043-19-3.jpg?t=%E5%B7%B2%E7%9F%A5%3A%28x-7%29%26%23178%3B%2B121%2C%28y%2B1%29%26%23179%3B%3D-0.064%2C%E6%B1%82%E6%A0%B9%E5%8F%B7x-2-%E6%A0%B9%E5%8F%B7x%2B10y%2B%26%23179%3B%E6%A0%B9)
x-7==±11
x=-4,x=18
y+1=-0.4
y=-1.4
根号有意义则x-2>=0
所以x=18
原式=√16-√4+³√(-343)
=4-2+(-7)
=-5
x=-4,x=18
y+1=-0.4
y=-1.4
根号有意义则x-2>=0
所以x=18
原式=√16-√4+³√(-343)
=4-2+(-7)
=-5
已知y=根号1-x+根号x-1+3,求根号x+根号y分之x+2根号xy+y+根号x-根号y分之一的值
代数式求值.已知x=2,y=根号3,求 (根号x-根号y)/(根号x+根号y)+(根号x+根号y)/(根号x-根号y)
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知(x-7)^2=121,(y+3)^3=-0.064,求根号x-2-根号x+10y+3^根号245y的值.
已知x、y为实数,且根号x²=根号3-根号2,根号y平方=根号2,x+y≠根号3,求x-y
已知y=根号(x-8)+根号(8-x)+18,求代数式[(x+y)/(根号x+根号y)]-2xy/(x根号y-y根号x)
已知x>根号x-5+根号5-x+x且|y²-36|+根号2x-y-z=0,求根号y-x+根号z的值
已知x平方+y平方-2y+1=0,求(根号x+根号y+3)/((根号xy+y)(3根号x+根号y))
已知4x^2+y^2-4x-6y+10=0,求(2\3x根号9x+y^2根号x/y^3)-(x^2根号(1\x)-5x根
已知x,y为实数,且y=根号2x-6+根号(3-x)+1,求x根号2x÷根号x/y
已知实数X Y满足(X-7)平方=121,(Y+1)立方=-0.064,求式子根号X-2-根号X+10Y+3次根号245
已知x =2y 化简(根号y/根号x -根号y )-(根号y/根号x +根号y)