(a-b-c+d)(a-b+c-d)=[(a-b)- ( )][( )+(c-d)]填空题

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/23 20:07:04
(a-b-c+d)(a-b+c-d)=[(a-b)- ( )][( )+(c-d)]填空题
x)HMMN1uS4mALM] h }p^.aTO>;mDJp6yv ;;+C

(a-b-c+d)(a-b+c-d)=[(a-b)- ( )][( )+(c-d)]填空题
(a-b-c+d)(a-b+c-d)=[(a-b)- ( )][( )+(c-d)]填空题

(a-b-c+d)(a-b+c-d)=[(a-b)- ( )][( )+(c-d)]填空题
=[(a-b)- (c-d )][(a-b )+(c-d)]

( )-(c-d)=(a-c)-(-b+d) A B C D A B C D （a+b)(c+d). [a,b)×[c,d a,b ,c ,d a b c d （a) (b) (c) (d) A,B,C,D A B C D 已知d>c a+b=c+d a+d (a+d+c-d)(a-b+c+d)=? a b c d* d_________=d c b a 实数a,b,c,d满足d>c；a+b=c+d；a+d 实数a,b,c,d,满足,d>c,a+b=c+d,a+d 已知a>b>c>d>0,a/b=c/d,求证a+d>c+d 已知a:b=c:d,求证(a+c):(a-c)=(b+d):(b-d) a>b>c>d>0.a/b=c/d怎么证明a+d>c+b