填空 4aˇ3×bˇ2×( )=-9aˇ6×bˇ2
a(a-b)ˇ3+2a²(b-a)²-2ab(b-a) 因式分解
当a+2b/2a-3b=3时,求代数式(4b+2a/9b-6a)-(4a-6b/3a+6b)的值
填空:1.如果2a+3b=1,那么3-4a-6b=
当a+2b/2a-3b=3,求代数式4b+2a/9b-6a-4a-6b/3a+6b
a+2b/2a-3b=3 求解4b+2a/9b-6a-4a-6b/3a+6b=?
计算(3a-2b)(9a*a+6ab+4b*b)-(3a+2b)(9a*a-6ab+4b*b)
2b根号a/b+3/a根号a立方b-(4a根号b/a+根号9ab)
3a^2b-{2a^2b+[9a^b-(6a^2b+4a^2)]-(3a^2b-8a^2)}=
(a+2b)(2a+4b)(3a+6b)(4a+8b)
aˇ3+aˇ2b-abˇ3-bˇ3因式分解
因式分解3(a^4+a^2b^2+b^4)-9a^2b^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