Lesson eLearning

After performing polynomial division of by , what is the quotient?

hard MCQ 4 marks Class 8 · Mathematics · Algebraic Expressions and Identities
  1. x^2-2x+1
  2. x^2-2x+2
  3. x^2-2x+3
  4. x^2-2x+4
Answer
x^2-2x+1

The correct answer is x^2-2x+1 — The remainder is 0, confirming the division is exact.

Step-by-step solution

  1. Use synthetic division with root .
  2. Set up the coefficients: 1 | -3 | 3 | -1.
  3. Bring down the leading coefficient 1 to the bottom row.
  4. Multiply 1 by 1 and add to the next coefficient: -3 + 1 = -2.
  5. Multiply -2 by 1 and add to the next: 3 + (-2) = 1.
  6. Multiply 1 by 1 and add to the last: -1 + 1 = 0 (remainder).
  7. The bottom row gives the coefficients of the quotient: .
  8. Thus the quotient is .
  9. The remainder is 0, confirming the division is exact.
Common mistake: Incorrect application of synthetic division steps

Concept tested: Polynomial long division

Published · How this solution was prepared and checked

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