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What is the leading term in the polynomial (4x^3-9x^2+x-2)?

Answer and explanation

Correct answer: (4x^3)

Direct answer: Option A, 4x^3. A polynomial is made of terms, and the leading term is the term with the greatest exponent of the variable when the terms are written in descending order of powers. In 4x^3 - 9x^2 + x - 2, the powers of x are 3, 2, 1 and 0. The greatest power is 3, so the first and leading term is 4x^3. The number 4 is its coefficient, and 3 is its exponent. Option A is correct. Option B, -9x^2, is the second term and has power 2, which is smaller than 3. Option C, x, has power 1, so it is another later term. Option D, -2, is a constant term; its x-power is 0 and it cannot lead this polynomial. Do not confuse the leading term with the leading coefficient: the leading term is 4x^3, while the leading coefficient is 4. Exam cue: compare exponents, not the size of coefficients.

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PolynomialLeading TermDegree

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