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What is the coefficient of (x) in (3x^2+2x-1)?

Answer and explanation

Correct answer: (2)

The governing concept is the coefficient of a term. A coefficient is the numerical factor multiplying a variable term, while the exponent identifies the power of that variable. In 3x² + 2x − 1, the term containing x to the first power is 2x, so the coefficient of x is 2. Therefore, option B is correct. The number 3 is the coefficient of x², not of x, because it belongs to the quadratic term. The number −1 is the constant term and has no x factor. Although the coefficient of a separately written x is 1, this expression contains 2x, not x alone. Carefully matching the requested power prevents confusing the linear coefficient with the quadratic coefficient or the constant term.

Related tags

CoefficientLinear TermQuadratic ExpressionsPolynomial BasicsAlgebraic TermsQuadratic ExpressionsExploring Algebraic IdentitiesMathematics

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