Question

Помогите!Решить:
1)a²-2ab+b²/ a²-ab+b² : 8a-8b/ a³+b³

Answer 1

$\frac{ a^{2}-2ab+b ^{2} }{a ^{2} -ab+b ^{2} } : \frac{8a-8b}{a ^{3}+b ^{3} } = \frac{(a-b) ^{2} }{ a^{2}-ab+b ^{2} } * \frac{(a+b)(a ^{2}-ab+b ^{2}) }{8(a-b)} = \frac{(a-b)(a+b)}{8} =$

$= \frac{a ^{2} -b ^{2} }{8}$