Question

35 БАЛЛОВ 5 ОЦЕНКА + ЛУДШИЙ

Answer 1

$\displaystyle 1). \ (* + *)(25x^{2}-*+16y^{2})=125x^{3}+64y^{3}\\\\{} \ \ \ \ \ 125x^{3}+64y^{3}=(5x)^{3}+(4y)^{3}=(5x+4y)(25x^{2}-20xy+16y^{2});\\\\\\2). \ (x^{2}y^{3}-*)(*+*+z^{10})=x^{6}y^{9}-z^{15}\\\\{} \ \ \ \ \ (x^{2}y^{3})^{3}-(z^{5})^{3}=(x^{2}y^{3}-z^{5})(x^{4}y^{6}+x^{2}y^{3}z^{5}+z^{10});$