Question

Сократите дробь.

Фотографию прикрепляю.

Answer 1

Ответ:

Объяснение:

a)

$\displaystyle\\\frac{x+x^\frac{2}{5} }{x^\frac{6}{5} -1} =\frac{x^\frac{2}{5}(x^\frac{3}{5}+1) }{\Big(x^\frac{3}{5}\Big)^2 -1} =\frac{x^\frac{2}{5}(x^\frac{3}{5}+1) }{\Big(x^\frac{3}{5}-1\Big)\Big(x^\frac{3}{5} +1\Big)} =\frac{x^\frac{2}{5} }{x^\frac{3}{5}-1 }$

б)

$\displaystyle\\\frac{1-b^{0,5}+b}{1+b^{1,5}} =\frac{1-b^{0,5}+b}{1+(b^{0,5})^{3}} =\\\\\\=\frac{1-b^{0,5}+b}{(1+b^{0,5})(1-b^{0,5}+b)} =\frac{1}{1+b^{0,5}}$