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In x² + 2x + 1, which term has the highest power?

Answer and explanation

Correct answer: x²

The governing concept is identifying the power of each term in a polynomial. The variable here is x. In the term x², the exponent of x is 2, so its power is 2. In 2x, the variable is actually x¹, because an exponent of 1 is usually not written; its numerical coefficient 2 does not change the power. The terms 1 and the separate number 2 are constants and therefore have power 0. Comparing the powers gives 2, 1, and 0, with 2 being the greatest. Hence x², option A, is the correct term. A common mistake is to confuse the coefficient 2 in 2x with an exponent, but coefficient and power are different features.

Related tags

PolynomialsTermsHighest PowerDegreeDefinition Of A PolynomialIntroduction To PolynomialsMathematicsClass 9 Mcq

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