Question

if a and b are roots of the equation ax²+bx+c=0 obtain the value of a/b +b/a

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Answer 1

$\\ \sf\longmapsto \dfrac{a}{b}+\dfrac{b}{a}$

$\\ \sf\longmapsto \dfrac{a^2+b^2}{ab}$

$\\ \sf\longmapsto \dfrac{(a+b)^2-2ab}{ab}$