Question

Разложи на множители: xz12+xy12−yz12−y13

Answer 1

$xz^{12}+xy^{12}-yz^{12}-y^{13}=\\=x(z^{12}+y^{12})-y(z^{12}+y^{12})=\\=(x-y)(z^{12}+y^{12})$