a+2b/2a-3b=3 求解4b+2a/9b-6a-4a-6b/3a+6b=?
a+2b/2a-3b=3 求解4b+2a/9b-6a-4a-6b/3a+6b=?
当a+2b/2a-3b=3,求代数式4b+2a/9b-6a-4a-6b/3a+6b
3a^2b-{2a^2b+[9a^b-(6a^2b+4a^2)]-(3a^2b-8a^2)}=
先化简,再求值:(2a-b)^2-(2a+b)(a-b)-3(a-3b)(a+3b),其中|a-1|+b^2=6b-9
(a+2b)(2a+4b)(3a+6b)(4a+8b)
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,
若a,b满足|a+5b-2|+(a+b-6)²=0,求代数式(a-3b)(a+2b)-(a+5b)(a+3b)
a-2b/a+2b=3,求2+2b/a-2b+3a-6b/4a+8b的值
计算(3a-2b)(9a*a+6ab+4b*b)-(3a+2b)(9a*a-6ab+4b*b)
(3a+2b)^2+(3a-2b)^2-(6a-4b)(3a-2b)=
A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+B A-B×3=C C+2×7+2=1