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Which option correctly gives a polynomial in (x) and its degree?

Answer and explanation

Correct answer: degree 3

In \(x^3+2x\), the powers of \(x\) are \(3\) and \(1\), both non-negative integers. The greatest power is \(3\), so it is a polynomial of degree \(3\). In option B, the expression is a polynomial, but its degree is \(2\), not \(1\). Exam tip: To find the degree, identify the greatest power of the variable only after checking that no negative or fractional powers occur.

Related tags

PolynomialsDegree Of PolynomialExponentsClass 9 MathematicsAlgebraDegree Of A PolynomialIntroduction To PolynomialsMathematics

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