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Class 9MathematicsIntroduction to PolynomialsLinear polynomialsExpert
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If (p(x)=6x-17), what is the correct value of (p(p(3)))?

Answer and explanation

Correct answer: -11

First evaluate the inner function: \(p(3)=6\times3-17=1\). Then substitute this result into \(p\): \(p(p(3))=p(1)=6\times1-17=-11\). Therefore, the correct answer is \(-11\). Option 1 is only the value of \(p(3)\), not of \(p(p(3))\). Exam tip: In a composite function, always evaluate the expression inside first.

Related tags

MathematicsPolynomialsLinear PolynomialsFunction EvaluationComposite FunctionsClass 9Introduction To PolynomialsClass 9 Mcq
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10 more MCQs
  1. 1If the highest power in a polynomial is 1, what is it called?
  2. 2Which expression is not a linear polynomial?
  3. 3Which expression is a polynomial but not a linear polynomial?
  4. 4Which statement is correct about the zeroes of a non-zero linear polynomial?
  5. 5Which expression is a polynomial in (s) and has degree (1)?
  6. 6If \(p(x)=ax+b\), where \(a\ne0\), is a linear polynomial, which property of its graph is always true?
  7. 7Which of the following expressions is a linear polynomial in \(x\)?
  8. 8A taxi charges a fixed fee of ₹50 and ₹12 per kilometre. If the distance travelled is represented by \(x\), which statement about \(C(x)=12x+50\) is correct?
  9. 9What type of polynomial is (4x-9)?
  10. 10What is the degree of a linear polynomial?
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