Question

zero of the polynomial x square+1 (x€R)​

Answer 1

Rewrite the polynomial x

2

−1=0 as:

x

2

−1=0

⇒x

2

−1

2

=0

⇒(x−1)(x+1)=0(∵a

2

−b

2

=(a−b)(a+b))

⇒(x−1)=0,(x+1)=0

⇒x=1,x=−1

Hence, the zeroes of the polynomial x

2

−1 are 1,−1.