Question

Помогите с 4 пожалуйста)

Answer 1

$\frac{x-1}{x^{3/4}+x^{1/2}}\cdot \frac{x^{1/2}+x^{1/4}}{x^{1/2}-1}-x^{1/4}=\frac{(x^{1/2}-1)(x^{1/2}+1)}{x^{1/2}\cdot (x^{1/4}+1)}\cdot \frac{x^{1/4}\cdot (x^{1/4}+1)}{x^{1/2}-1}=\\\\=\frac{(x^{1/2}+1)\, \cdot \, x^{1/4}}{x^{1/2}}=\frac{x^{1/2}+1}{x^{1/4}}$