Question:
Which of the following is a linear polynomial?
(a) $x+x^{2}$
(b) $x+1$
(c) $5 x^{2}-x+3$
(d) $x+\frac{1}{x}$
Solution:
(b) $x+1$
Clearly, $x+1$ is a polynomial of degree 1 . So, it is a linear polynomial.
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