x²-1
(x+1)(x-1)
The expression x² – 1 is a binomial, meaning it consists of two terms. The first term is x², which means x raised to the second power or x multiplied by itself twice. The second term is -1, which is just a negative one.
To simplify this expression, we can use the difference of squares formula, which states that a² – b² = (a + b)(a – b). In this case, we can rewrite x² – 1 as (x + 1)(x – 1). This is because if we let a = x and b = 1, then we have x² – 1 = (x + 1)(x – 1).
Therefore, x² – 1 can be factored as (x + 1)(x – 1). This expression cannot be simplified any further unless there are additional instructions or expressions to combine with it.
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