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Subjects
Class 10MathematicsPolynomialsOperations on real numbers and the laws of exponentsHard
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For the polynomial \\(P(x)=x^3-4x+1\\), what is the value of \\(P(2)\\) when \\(x=2\\) is substituted?

Answer and explanation

Correct answer: 1

Substituting \(x=2\), we get \(P(2)=2^3-4(2)+1=8-8+1=1\). Hence, option A is correct. Option B results from forgetting the final \(+1\). Exam tip: substitute the value carefully and simplify each term, especially the term containing the exponent.

Related tags

PolynomialsPolynomial EvaluationSubstitutionExponentsOperations On Real Numbers And The Laws Of ExponentsMathematicsClass 10 Mcq
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  1. 1Which option is the simplified form of √128?
  2. 2If α = √3 + 1 and β = √3 − 1, what is αβ?
  3. 3Which option gives the correct value of 1/(√10 − 3)?
  4. 4What is the value of (2^3\cdot2^4)?
  5. 5What is the simplified form of (\frac{5^6}{5^2})?
  6. 6What is the simplified form of ((3^2)^4)?
  7. 7If \(a\ne0\), what is the value of \(a^0\)?
  8. 8What is (10^{-2}) equal to?
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