Question

plz solve this question I will follow you if you can answer this question ❤️❤️ stepwise solutions​

Answer 1

Answer:

$= \frac{ {x}^{4} }{ {y}^{4} } + 1 - \frac{7 {x}^{2} }{ {y}^{2} } \\ \\ = \frac{ {x}^{4} + {y}^{4} - 7 {x}^{2} {y}^{2} }{ {y}^{4} } \\ \\ = \frac{ { ({x}^{2}) }^{2} + {( {y}^{2}) }^{2} - 2 {x}^{2} {y}^{2} - 5 {x }^{2} {y}^{2} }{ {y}^{4} } \\ \\ \\ = \frac{ {( {x}^{2} - {y}^{2} )}^{2} - 5 {x}^{2} {y}^{2} }{ {y}^{4} } \\ \\ \\ = \frac{ {( {x}^{2} - {y}^{2} )}^{2} - {( \sqrt{5} xy)}^{2} }{ {y}^{4} } \\ \\ \\ = \frac{( {x}^{2} - {y}^{2} - \sqrt{5} xy)( {x}^{2} - {y}^{2} + \sqrt{5}xy) }{ {y}^{4} }$

Answer 2

Explanation:

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