计算:12(3a+5b)^12X(3a-5b)^4/[3(3a+5b)^4X(3a-5b)]^3
1/4(a-b)^2x(b-a)^3x(-a-b)^5x(2a+2b)^4
计算:a²/a-b-a-b/b²;3x/x-5-2x/5-x.
同底数幂乘方(a-b)^5*(a-b)^10*(b-a)(a-2b)^2*(a-2b)*4*(a-b)(x-3y)^2*
a*b=2×a+b 计算x*2x*3x*4x*5x*6x*7x*8x*9x=3039 x=
已知A=2x-3,B=-3x+5.计算﹙5A+B)(2A-3B)
(3a-6b)/(a+b) - (5a-6b)/(a-b) - (4a-5b)/(a+b) - (7a-8b)/(a-b
(3a-6b/a+b)-(5a-6b/a-b)-(4a-5b/a+b)-(7a-8b/b-a)
计算:(b-a)^5(a-b)^m+(a-b)^(m+3)(b-a)^2
计算:(a-b)^m+3(b-a)^2(a-b)^m(b-a)^5
计算:3a+4b/a-b+3b/b-a-4a/a-b
下列计算正确的是() A.(x+5)(x-3)=x²-15 B.(2a+b)(a+b)=2a²+3a
(6x+5)/(x2-x-12)=A/(x-4)+B/(X+3).则A+B=