Answer: \(x^2 - 4\)
Step-by-step explanation:
Since a Binomial is an algebraic expression of the sum or the difference of two terms.
Therefore, For a binomial an expression must contain exactly two terms.
In a) \(x^2\) there is only one term therefore it is not the Binomial.
In a) \(x^2-4x^2 = -3x^2\), there is only one term therefore it is not the Binomial.
In a) \(x^2-4\) there is exactly two terms therefore it is a Binomial.
In a) \(2x^2+3x-1y\) there are three terms therefore it is not the Binomial.
