大师作文网化简题.化简,(a^-3b^4)^2乘(3a^2b)^-2.(x+y)乘x^2/x^2-y^2+y^2/y-x.y-3/
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化简题.
化简,(a^-3b^4)^2乘(3a^2b)^-2.
(x+y)乘x^2/x^2-y^2+y^2/y-x.
y-3/4y-8除(y+2-5/y-2).
解分式方程,2/2-x+x^2-1/x^2-4+1/x+2＝1.
化简,(a^-3b^4)^2乘(3a^2b)^-2.
(x+y)乘x^2/x^2-y^2+y^2/y-x.
y-3/4y-8除(y+2-5/y-2).
解分式方程,2/2-x+x^2-1/x^2-4+1/x+2＝1.
(a^-3b^4)^2乘(3a^2b)^-2=(a^-3b^4)^2/(3a^2b)^2=(b^3/3a^5)^2=b^6/9a^10
(x+y)乘x^2/x^2-y^2+y^2/y-x=(x+y)x^2/(x+y)(x-y)+y^2/y-x=x^2/(x-y)-y^2/(x-y)=x+y
y-3/4y-8除(y+2-5/y-2)=y-3/4y-8除(y^2-4-5/y-2)=y-3/4y-8除(y+3)(y-3)/(y-2)=y-3/4(y-2)乘(y-2)/(y+3)(y-3)=1/4(y+3)
(x+y)乘x^2/x^2-y^2+y^2/y-x=(x+y)x^2/(x+y)(x-y)+y^2/y-x=x^2/(x-y)-y^2/(x-y)=x+y
y-3/4y-8除(y+2-5/y-2)=y-3/4y-8除(y^2-4-5/y-2)=y-3/4y-8除(y+3)(y-3)/(y-2)=y-3/4(y-2)乘(y-2)/(y+3)(y-3)=1/4(y+3)
化简题.化简,(a^-3b^4)^2乘(3a^2b)^-2.(x+y)乘x^2/x^2-y^2+y^2/y-x.y-3/
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