1、(-y^3)^5/y^3/ y^2+2(-y)^102、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^23、已知X^a=5,x^b=3,求X^(3a-2b)的值
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![1、(-y^3)^5/y^3/ y^2+2(-y)^102、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^23、已知X^a=5,x^b=3,求X^(3a-2b)的值](/uploads/image/z/2730247-7-7.jpg?t=1%E3%80%81%28-y%5E3%29%5E5%2Fy%5E3%2F+y%5E2%2B2%28-y%29%5E102%E3%80%81%28x-y%29%5E7%2F%28y-x%29%5E6%2B%28x%2By%29%5E3%2F%28x%2By%29%5E23%E3%80%81%E5%B7%B2%E7%9F%A5X%5Ea%3D5%2Cx%5Eb%3D3%2C%E6%B1%82X%5E%283a-2b%29%E7%9A%84%E5%80%BC)
1、(-y^3)^5/y^3/ y^2+2(-y)^102、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^23、已知X^a=5,x^b=3,求X^(3a-2b)的值
1、(-y^3)^5/y^3/ y^2+2(-y)^10
2、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^2
3、已知X^a=5,x^b=3,求X^(3a-2b)的值
1、(-y^3)^5/y^3/ y^2+2(-y)^102、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^23、已知X^a=5,x^b=3,求X^(3a-2b)的值
1、(-y^3)^5/y^3/ y^2+2(-y)^10
=-y^15/y^5+2y^10
=-y^10+2y^10
=y^10
2、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^2
=(x-Y)+(x+y)^5
3、已知X^a=5,x^b=3,求X^(3a-2b)的值
(x^a)3+(x^b)^2
=5^3+3^2
=125+9
=134
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y (3y^2+8y-3)-6y(3y+2y-1)+9y
2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1
5y∧2-(y-2)(3y+1)-2(y+1)(y-5)
解方程:3y^2-(2y+1)(y-1)=(y-5)(y+1)
解方程3y^2-(2y+1)(y-2)=(y-5)(y-1)
解方程:3y²-(2y+1)(y-2)=(y-5)(y+1)
y-(y-1)/2=1-(2y-3)/5
y-y-1/2=3-y+2/5
解方程y-[3y-1]等于5【y+2]
通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9
y-1/y-2 - y-3/y-4=y-2/y-3 - y-4/y-5一共有四个分数哦~希望可以快一点~谢谢!
计算:[(y+1)/(y^2-4y+3)减去(y-2)/(y^2-6y+9)]除以(y-5)/(y-1)
计算:(-3y)^2(2y+1)-(3y-5)(3y+4)
解3y+5/3y-6=1/2+5y-4/2y-4
3(Y+1)^2-5(Y+1)(Y-1)+2(Y-1)^2,化简