Question

kindly view this pic , and answer....it's urgent....I will mark u as brainlist​

Answer 1

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$\alpha ^{4} + \beta ^{4} = ( \alpha ^{2} + \beta ^{2} )^{2} - 2 \alpha ^{2} + \beta ^{2} \\ = (( \alpha + \beta ) ^{2} - 2 \alpha \beta ) ^{2} - 2( \alpha \beta ) ^{2}$

$(( - \frac{b}{a} ) ^{2} - 2 \frac{c}{a})^{2} - (2( \frac{c}{a} ) ^{2} )$

$= ( \frac{ b ^{2 } - 2ac }{a ^{2} } ) ^{2} - \frac{2c ^{2} }{a ^{2} } \\ = \frac{(b ^{2} 2ac) ^{2} - 2a ^{2} c ^{2} }{a ^{4} }$