1.当分式x(x-2)/x²+2的值为0 时,求x²/(x-5)-(x)/(x-2)+(1+x)/(
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1.当分式x(x-2)/x²+2的值为0 时,求x²/(x-5)-(x)/(x-2)+(1+x)/(2-x)的值
2.先化简再求值:a/(a-3)-(a+6)/(a^2-3a)+3/a,其中a=3/2
2.先化简再求值:a/(a-3)-(a+6)/(a^2-3a)+3/a,其中a=3/2
1.当分式x(x-2)/x2+2的值为0 时,x=0或x=2
(1)若x=0,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)=0
(2)若x=2,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)无解(因为分母2-x=0)
2.a/(a-3)-(a+6)/(a^2-3a)+3/a
=a/(a-3)-(a+6)/a(a-3)+3/a
=a2/a(a-3)-(a+6)/a(a-3)+3(a-3)/a(a-3)
=(a2+2a-15)/a(a-3)
=(a-3)(a+5)/a(a-3)
=(a+5)/a
=13/3
哈哈
(1)若x=0,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)=0
(2)若x=2,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)无解(因为分母2-x=0)
2.a/(a-3)-(a+6)/(a^2-3a)+3/a
=a/(a-3)-(a+6)/a(a-3)+3/a
=a2/a(a-3)-(a+6)/a(a-3)+3(a-3)/a(a-3)
=(a2+2a-15)/a(a-3)
=(a-3)(a+5)/a(a-3)
=(a+5)/a
=13/3
哈哈
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