1.化简-(-2)^96+(-2)^97+(-2)^98的正确结果是( )A.2^96 B.-2^96 C.3×2^96 D.-3×2^962.已知不等式ax+1>x+a的解集是x<1,则( )A.a>1 B.a<1 C.a≥1 D.a≤13.如果(1/a)+(1/b)=1/(a+b),那么(b/a)+(a/b)的值是( )A.1 B.-1 C.2 D.-26.m/(m-n)+n²/(mn-m²)=_________7.当x______时,分式-1/(x²+0.1)的值为负数8.若y/x=9/10,则(1-y/x)^99(x/y-x)^100的值是)___________9.16- jca,jk
1.化简-(-2)^96+(-2)^97+(-2)^98的正确结果是( )
A.2^96 B.-2^96 C.3×2^96 D.-3×2^96
2.已知不等式ax+1>x+a的解集是x<1,则( )
A.a>1 B.a<1 C.a≥1 D.a≤1
3.如果(1/a)+(1/b)=1/(a+b),那么(b/a)+(a/b)的值是( )
A.1 B.-1 C.2 D.-2
6.m/(m-n)+n²/(mn-m²)=_________
7.当x______时,分式-1/(x²+0.1)的值为负数
8.若y/x=9/10,则(1-y/x)^99(x/y-x)^100的值是)___________
9.16- jca,jk
1.化简-(-2)^96+(-2)^97+(-2)^98的正确结果是(A)
A.2^96 B.-2^96 C.3×2^96 D.-3×2^96
2.已知不等式ax+1>x+a的解集是x<1,则(B)
A.a>1 B.a<1 C.a≥1 D.a≤1
3.如果(1/a)+(1/b)=1/(a+b),那么(b/a)+(a/b)的值是(A)
A.1 B.-1 C.2 D.-2
6.m/(m-n)+n²/(mn-m²)=____(m+n)/n_____
7.当x__是任意实数____时,分式-1/(x²+0.1)的值为负数
8.若y/x=9/10,则(1-y/x)^99(x/y-x)^100的值是)____10_______
9.16- jca,jk =?????
1 -2^96-2*2^96+4*2^^96=2^96 (A)
2 (a-1)x>a-1 解集比较符变化,则a-13 1/a+1/b=(a+b)/ab=1/(a+b) 则(a+b)^=ab (B)
b/a+a/b=(b^2+a^2)/ab=[(a+b)^2-2ab]/ab=(ab-2ab)/ab=-1
6 M/(M-N)+N^2/[M(N-M)=(M^2-N^2)/[M(M-N)]=(M+N)/M
7 X^2>=0 X^2+0.1>0 -1/(X^2+0.1)>0 X可为任意数
8 (1-y/x)^99(x/y-x)^100
=10^(-99)*(... 里面的X如何约掉呢,还是结果当中包含了X ?
9 看不明白
.化简-(-2)^96+(-2)^97+(-2)^98=(-2)^96*(-1-2+4)=2^96
选A
2.已知不等式ax+1>x+a的解集是x<1,则( )
(a-1)x>1-a,不等号反向,说明a-1