x/x-3减x+6/x^2-3x加3/x,其中x=3/2
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x/x-3减x+6/x^2-3x加3/x,其中x=3/2
x/x-3减x+6/x^2-3x加3/x,其中x=3/2
x/x-3减x+6/x^2-3x加3/x,其中x=3/2
x/x-3减x+6/x^2-3x加3/x
=[x*x-(x+6)+3(x-3)]/x(x-3)
=(x^2-x-6+3x-9)/x(x-3)
=(x^2+2x-15)/x(x-3)
=(x+5)(x-3)/x(x-3)
=(x+5)/x
所以原式
=13/3
先将式子进行化简:x/x-3 - x+6/x²-3x + 3/x
=x²/x(x-3) - x+6/ x(x-3) + 3(x-3)/x(x-3)
=x²-(x-6)+3(x-3)/ x(x-3...
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先将式子进行化简:x/x-3 - x+6/x²-3x + 3/x
=x²/x(x-3) - x+6/ x(x-3) + 3(x-3)/x(x-3)
=x²-(x-6)+3(x-3)/ x(x-3)
=x²+2x-15 / x(3-x)
=(x-3)(x+5)/x(x-3)
=(x+5)/x
=1 + 5/x
将x=3/2代入,原式=13/3
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