5.105

1)1/8a³-1/4a²b+1/6ab²-1/27b³

2)1/216x³+1/24x²y+1/8xy²+1/8y³

3)18m³-3/28m²+3/98m-1/343

4)0.125+0.075b+0.015b²+0.001b³

5)0.008m³+0.012m²n+0.006mn²+0.001n³

6)0.008x³+0.06x²y+0.15xy²+0.125y³

5.106

1)(x/2-y/3)³

2)(5m/3+5n/2)³

3)(0.2a-5b)³

4).(0.3x+4y)³

5.107

1)8a^9+36a^6b^2±54a³b^4+27b^8

2)x^6-3x^4y²+3x²y^4+y^6

5)1000x^6+100x^4a²±10/³a^4x²+1/27a^6

3)8m^6-36m^4n²+54m²n^4-27n^6

4)343p^6+1323p^6q^4+1701p^4q^8+729q^12

6)0.27a^15+0.135a^10b²+0.225a^5b^4+0.125b^6