Question

$frac{5a}{a ^{2}-b ^{2} } / frac{15 a^{2} }{a-b}=$

Answer 1

$frac{5a}{a62-b^2} : frac{15a^2}{a-b} = frac{5a}{(a-b)(a+b)} cdot frac{a-b}{15a^2} = frac{1}{3a(a+b)}$

Answer 2

5a/(a²-b²) : 15a²/(a-b)=5a/(a+b)(a-b) . (a-b)/15a²=1/3a(a+b)

Answer 3

=5a/(a+b)(a-b) . (a-b)/15aˇ2=1/3a(a+b)

Answer 4

Исправьте в тексте ответа