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Post-UTME Mathematics 2013 Objective — Question 77

Question 77 of 100 from the Post-UTME Screening (Post-UTME) Mathematics 2013 Objective paper, with the correct answer and a full explanation.

Which of the following is not a quadratic expression?

A. x²-5
B. x(1-2x)
C. x(1+x²)Correct
D. x²-⅗x+1

Explanation

x(1+x²)=x+x³ is cubic, not quadratic.

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