若2a-b=2,则6+8a-4b=
(a+2b)(2a+4b)(3a+6b)(4a+8b)
若a/b=2 则a*a-ab+b*b/a*a+b*b等于?
若3a+2b=10.8,则6a+4b-5等于( )
3a+2b=3,则8-6a-4b=__
对任意自然数a、b,规定a*b=2×a+b.若有:a*2a*3a*4a*5a*6a*7a*8a*9a=2026,则a的值
若a+2b=3,则2a+6b=;a-3b=4,则3a-9b=;a+2b=5,则8-a-2b=
若a-b/a+b=4 则代数式2a﹣2b/a+b-4a+4b/3a-3b=
如果a-2b/a+2b=3,求a+2b/a-2b+3a-6b/4a+8b
(a-2b)/(a+2b)=3,求(a+2b)/(a-2b)+(3a-6b)/(4a+8b)的解,
计算:((a+b)(a-b)-(a-b)^2+2b(a-b))/4(a-b)
3a^2b-{2a^2b+[9a^b-(6a^2b+4a^2)]-(3a^2b-8a^2)}=
已知a=2b,c=5a{a不等于0},则6a+2b-c除以a-4b+c等于?