Question

Dheeraj sais"The zeros of the polynomial x2-1 are -1 and 1. Is he correct? justify your answer?​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Let
$\alpha = - 1 \: and \: \beta = 1$
be the zeros of the polynomial
${x}^{2} - 1$
a = 1, b = 0, c = -1

Then,

$\alpha + \beta = \frac{ - b}{a} \\ = > - 1 + 1 = \frac{0}{1} \\ = > 0 = 0 \\ = > l.h.s = r.h.s \\ and \\ \: \alpha \beta = \frac{c}{a} \\ = > - 1 \times 1 = \frac{ - 1}{1} \\ = > - 1 = - 1 \\ = > l.h.s \: = \: r.h.s$
Therefore, the statement is correct.