\[\frac{a^{3} + b^{3}}{a^{2} - ab + b^{2}} - \frac{a^{3} - b^{3}}{a^{2} + ab + b^{2}} =\]
\[= a + b - a + b = 2b =\]
\[= 0 \cdot 0,05 = 0,1.\]