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Priya checks that for any number $x$ , the expression $x^{2} - (x - 1) (x + 1)$ is always the same value.
What is that constant value?

Class 8Standard IdentitiesAlgebra

A0
B2
C1
D3

Step-by-Step Solution

(x - 1) (x + 1) = x^{2} - 1

, so

x^{2} - (x^{2} - 1) = 1

for every

x

. The constant value is 1.

Answer: C) 1

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