Question

3/y²-1=1/y-1/y+1
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Answer 1

$\frac{3}{ {y}^{2} } - 1 = \frac{1}{y} - \frac{1}{y} + 1 \\ \frac{3}{ {y}^{2} } - 1 = 1 \\ \frac{3}{ {y}^{2} } = 2 \\ 3 = 2 {y}^{2} \\ y1 = - \sqrt{ \frac{3}{2} } \\ y2 = + \sqrt{ \frac{3}{2} }$