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Which expression is a quadratic trinomial polynomial?

Answer and explanation

Correct answer: \(x^2-5x+6\)

\(x^2-5x+6\) has three terms: \(x^2\), \(-5x\), and \(6\). Its highest exponent is 2, so it is a quadratic polynomial; because it has three terms, it is a trinomial. \(x^3-5x+6\) is also a trinomial, but its degree is 3, so it is cubic. Exam tip: identify degree from the highest exponent and count terms separated by \(+\) or \(-\).

Related tags

PolynomialsQuadratic TrinomialDegree Of PolynomialTerms Of PolynomialClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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