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Which expression is a binomial polynomial in (x)?

Answer and explanation

Correct answer: \(x^4-16\)

\(x^4-16\) has exactly two terms, \(x^4\) and \(-16\), so it is a binomial. Its exponent of \(x\) is 4, a non-negative integer; hence it is a polynomial. \(x^2+x+1\) is a trinomial, while \(\frac{1}{x}+2\) contains \(x^{-1}\), so it is not a polynomial. Exam tip: a binomial has exactly two terms, and variable exponents in a polynomial must be non-negative integers.

Related tags

PolynomialsBinomialAlgebraic ExpressionsDegree Of PolynomialClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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