Q2 of 108 Page 42

Find the root of the following quadratic equations, if they exist, by using the quadratic formula by Shridharacharya Method:

x2 + 4x + 5 = 0


When we compare the above quadratic equation with the generalized one we get,

ax2 + bx + c = 0


a = 1


b = 4


c = 5


There is one formula developed by Shridharacharya to determine the roots of a quadratic equation which is as follows:



Before putting the values in the formula let us check the nature of roots by b2 – 4ac >0


(4)2 – (4 × 1 × 5)


16 – 20


-4


Since b2 – 4ac = -4 the roots are imaginary.


Therefore the given quadratic equation does not has real roots.


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