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If (a=0), what will be the degree of (ax^4+2x^3-x+1)?

Answer and explanation

Correct answer: 3

On putting \(a=0\), \(ax^4=0\), so the polynomial becomes \(2x^3-x+1\). The highest power of \(x\) in the remaining polynomial is 3; therefore, its degree is 3. Option 4 is incorrect because the \(x^4\) term becomes zero. Exam tip: first remove terms with zero coefficients, then identify the highest remaining exponent.

Related tags

PolynomialsDegree Of PolynomialZero CoefficientAlgebraClass 9Definition Of A PolynomialIntroduction To PolynomialsMathematics

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