题目内容
A.12xyz B.12x2yz C.24xyz D.24x2yz
分式和的最简公分母是
A.10x7
B.7x10
C.10x5
D.7x7
A.a4+2a2+1 B.(a2-1)(a2+1)
C.a4-2a2+1 D.(a-1)4
分式-和的最简公分母是
A.12xyz
B.12x2yz
C.24xyz
D.24x2yz