(a+2b)·(a-3b)怎么化简
a^2-b^2怎么化简
a+b+(a-2)+a+b+2b怎么化简
请问2a-(5a-3b)+3(2a-b)化简怎么做?
化简求值(a-b)/(a+b)+(a+b)/(a-b)-(2a*a-2b*b)/(a*a+b*b)其中a=-2,b=0.
x^2+b/ax+(b/2a)^2-(b/2a)^2+c/a=0该怎么化简?
(a+b)(a^2+b^2)(a-b)怎么做
5(3a^2b-ab^2)-(ab^2+3a^2b)怎么化简
a+2ab+b/2a-3ab+2b怎么化简?
a²-b²/a²-3ab+2b² 怎么化简
a²-a-4b²+2b怎么化简!
b^2+ab分之a^2+ab怎么化简?