Question

Ребят, можете помочь, пожалуйста)(

Answer 1

$\displaystyle (y^{14}+u^{14})^{2}-(y^{14}-u^{14})^{2}-y^{2}u^{2}=\\\\=(y^{14}+u^{14}-y^{14}+u^{14})(y^{14}+u^{14}+y^{14}-u^{14})-y^{2}u^{2}=\\\\=2u^{14}\cdot2y^{14}-y^{2}u^{2}=y^{2}u^{2}(4y^{12}u^{12}-1)=y^{2}u^{2}(2y^{6}u^{6}-1)(2y^{6}u^{6}+1);$