化简a-(2a-b)-(a+2b)
化简:{[(2a-b)/(a+b)]-[b/(a-b)]}÷[(a-2b)/(a+b)]
化简(2a-b/a+b-b/a-b)除以a-2b/a +b
化简(2a-b/a+b-b/a-b)除以a-2b/a+b
化简 (a²+b²/a²-b²-a-b/a+b)÷2ab/(a-b)(a+b)&
(a-b)(a^2+ab+b) 化简
化简 |a+b|-|3a-2b|
1.化简“A-B|-|B|+|-2A|
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
1.(a-b)(a+b)-(a+b)²+2b(b-a),化简
现规定一种运算a*b=(a-b)^2+(a-b)(a+b),其中a,b是实数,化简b*(b-a)+(b-a)*b
化简a根号a+b/a-b -b根号a-b/a+b -2b^2/根号a^2-b^2(a>b>0)
a-b+2b²/a+b