初升高,几道数学题不太会,①(1/2m-1/3)(1/4m²+1/6m+1/9)=利用立方和、立方差公式进行因式分解:②27m³-1/8n³=③x³-125=④m^6-n^6=

Question

初升高,几道数学题不太会,
①(1/2m-1/3)(1/4m²+1/6m+1/9)=
利用立方和、立方差公式进行因式分解:
②27m³-1/8n³=
③x³-125=
④m^6-n^6=

Answer 1

①1/8m^3-1/27②(3m-1/2)(9m^2+3/2m+1/4)③(x-5)(x^2+5x+25)④(m+n)(m-n)(m^2+mn+n^2)(m^2-mn+n^2)