Q. 1 A4.1( 23 Votes )

# In each of the fo

We know that the roots of the quadratic equation satisfies the equation.

So, if 1 and -1 are the roots of

then they must satisfy the equation.

Therefore, putting 1 in the equation we have

= 12 + 1 + 1 = 1 + 1 + 1 = 3 which is not equal to 0.

So, it is not a root of the equation.

Putting -1 in the equation we have

= (-1)2 + (-1) + 1 = 1-1 + 1 = 1 which is not equal to 0.

So, it is also not a root of the equation.

Hence, 1 and -1 are not the roots of the equation.

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