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Polynomial example problems-2018 JAMB-UTME mathematics question 17

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Polynomial example problems-2018 JAMB-UTME mathematics question 17

polynomial example problems-2018 JAMB-UTME mathematics question 17
  • A. 1, 1, or 5
  • B. 1, 1, or -5
  • C. -1, 1, -5
  • D. 1, -1, or 5

QUICK ANSWER…

D

SOLUTION 

We’re going to be using factorization to solve this problem.

polynomial example problems-2018 JAMB-UTME mathematics question 17_question

Hence the final answer = x = 1, – 1 , and 5

Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is incorrect.
  3. C is incorrect.
  4. D is the correct answer.

QUICK TIPS…

You may please note these/this:

  • You can also use one known factor to long-divide the main polynomial and then solve the factor to determine the remaining roots.
  • Adopt factorization method if the polynomial is easily factorizable as shown above.
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