分式化简:[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/(x-4)/(x^3-2x^2)
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分式化简:[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/(x-4)/(x^3-2x^2)
分式化简:[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/(x-4)/(x^3-2x^2)
分式化简:[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/(x-4)/(x^3-2x^2)
[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/(x-4)/(x^3-2x^2)
=(x+2)x^2(x-2)/[x(x-2)(x-4)]-(x-1)x^2(x-2)/[(x-2)^2(x-4)]
=(x+2)x/(x-4)-(x-1)x^2/[(x-2)(x-4)]
=(x^3-4x-x^3+x^2)/[(x-2)(x-4)]
=x(x-4)/[(x-2)(x-4)]
=x/(x-2)
[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/[(x-4)/(x^3-2x^2)]
=[(x+2)/x(x-2)-(x-1)/(x-2)^2]/[(x-4)/x^2(x-2)]
={[(x+2)(x-2)-x(x-1)]/x(x-2)^2}/[(x-4)/x^2(x-2)]
=[(x^2-4-x^2+x)/(x-2)]/[(x-4)/x]
=[(x-4)/(x-2)]/[(x-4)/x]
=x/(x-2)
x/(x-2) 附图:
x/(x-2)
分式化简1-[(x-1)/x]÷{[x/(x+2)] -[1/(x^2+2x)]}
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