Which of the following is a binomial?
(a) x² + x + 3
(b) x² + 4
(c) 2x²
(d) $x + 3 + \frac{1}{x}$

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Solution

(b) x² + 4

Clearly, $x^{2} + 4$ is an expression having two non-zero terms. So, it is a binomial.

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