Question

if alpha and beta are the zeroes of p(x)=ax2-bx+c=0. Calculate alpha + beta

Answer 1

P(x)= ax2-bx+c
It is given that alpha and beta are its zeroes so

Alpha+beta=. -coefficient of x/coefficient ofx2

Alpha+beta= -(-b)/a=b/a

Answer 2

Hey !!!


if
$\alpha \: and \: \beta \:$
Are zeroes of polynomial

then we know that sum of zeroes = - (cofficient of x / cofficient of x² )

=>
$\alpha \: + \: \beta = - b \div a$

but given .. cofficient of x =( -b)

and cofficient of x² = a

so

$\alpha + \beta = - (- b) \div a$

=> b/a Answer

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Hope it helps you !!!

@Rajukumar111