Question

factorise above question...the answer should be correct..​

Answer 1

Answer:

a^4 + b^4 - 7a²b²

if we substitube x = a² , y=b²

equation looks like

=> x² - 7xy + y² =0

this quadratic equation has doesn't rational factors so the final answer is

= a^4 + b^4 - 7a²b²

Answer 2

${a}^{4} + {b}^{4} - 7 {a}^{2} {b}^{2} \\ = {a}^{2} {b}^{2} ( \frac{ {a}^{2} }{ {b}^{2} } + \frac{ {b}^{2} }{ {a}^{2} } - 7)$

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