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Roots of quadratic:

Mathematics
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if α and β are the roots of equation 4x^2 - 2x - 1 = 0, find α - β
use formula : α - β = | (sqrt(D)/a) | with D=b^2-4ac
oh yeah... forgot to put - without finding the roots So like using αβ = c/a and α+β=-b/a

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Other answers:

right, but ur problem to find value of α - β?
yes. find α - β
we know that general form of a quadratic equation is ax^2+bx+c=0 so, we can find α - β with formula : α - β = abs(sqrt(D)/a)
You can always count on finding the roots and assuming them as \(\alpha, \beta\).
\[x = {2 \pm \sqrt{4 - 4(4)(-1)} \over 8}\]
@ParthKohli, without finding roots
yea, right to.. but should use absolut sign because not known α > β or α < β
yeah ok
so, what ur answer ?
1.128
yea, or (sqrt(5))/2 ?

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