Question

if alpha and beta are the roots of x²-1=0, then alpha + beta​

Answer 1

$Given \: Quadratic \: equation :$

$x^{2} - 1 = 0$

$Given \: \alpha \:and \: \beta \: are \: roots$

$of \: the \: equation$

$\alpha + \beta = \frac{ - Coefficient \: x}{Coefficient \: of \:x^{2} }$

$= \frac{ - 0 }{ 1 }$

$= 0$

Therefore.,

$\red{\alpha + \beta} \green { = 0 }$

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