2
A teacher gave a question to find the roots of the equation
{(x)/(x+1)} + {(x+1)/x;. Ravi and Ankit cheated from each other but
Sahil solved it of his own, Ravi said one of the roots is 3/2. Ankit said one
of the roots is -5/2. Sahil said this is not possible to find as the discriminant
is negative. Who's answer is correct and what moral value you get from it?
Give prime factorisation of 4620
Answers
Given : A teacher gave a question to find the roots of the equation x/(x +1 ) + (x + 1)/x
Ravi said one of the roots is 3/2. Ankit said one of the roots is -5/2.
Sahil said this is not possible to find as the discriminant is negative.
To Find : Who is correct
Solution:
x/(x +1 ) + (x + 1)/x = 0
=> x² + (x + 1)² = 0
=> x² + x² + 2x + 1 = 0
=> 2x² + 2x + 1 = 0
D = 2² - 4(2)(1)
=> D = 4 - 8
=> D = - 4
D < 0
discriminant is negative
Roots are not real
Hence Sahil is correct that
this is not possible to find as the discriminant is negative
SAHIL is correct
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