Question

x²+5x–1=0,Solve the given equation using the general formula.

Answer 1

Solution :

Compare given Quadratic equation

x²+5x-1=0 with ax²+bx+c=0, we get

a = 1 , b = 5 , c = -1

Discreminant ( D ) = b² - 4ac

= 5² - 4 × 1 × ( -1 )

= 25 + 4

D = 29

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We know the quadratic formula :

x = [ -b ± √D ]/( 2a )

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x = [ -5 ± √29 ]/2

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