[tex]\displaystyle\bf\\\frac{11,2^{3} -4,3^{3} }{6,9} -11,2^{2} -4,3^{2} =\\\\\\=\frac{(11,2 -4,3)\cdot(11,2^{2}+11,2\cdot 4,3+4,3^{2})}{6,9} -11,2^{2} -4,3^{2}= \\\\\\=\frac{6,9\cdot(11,2^{2}+11,2\cdot 4,3+4,3^{2})}{6,9} -11,2^{2} -4,3^{2}= \\\\\\=11,2^{2}+11,2\cdot 4,3+4,3^{2}-11,2^{2} -4,3^{2}=11,2\cdot 4,3=48,16[/tex]
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[tex]\displaystyle\bf\\\frac{11,2^{3} -4,3^{3} }{6,9} -11,2^{2} -4,3^{2} =\\\\\\=\frac{(11,2 -4,3)\cdot(11,2^{2}+11,2\cdot 4,3+4,3^{2})}{6,9} -11,2^{2} -4,3^{2}= \\\\\\=\frac{6,9\cdot(11,2^{2}+11,2\cdot 4,3+4,3^{2})}{6,9} -11,2^{2} -4,3^{2}= \\\\\\=11,2^{2}+11,2\cdot 4,3+4,3^{2}-11,2^{2} -4,3^{2}=11,2\cdot 4,3=48,16[/tex]
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