A teacher asked 10 of his students to write a polynomial in one variable on a paper and then to handover the paper. The following were the answers given by the students : 2x + 3, 3x^2 + 7x + 2, 4x^3 + 3x^2 + 2, x^3 + root(3x) + 7, 7x + root(7), 5x^3 - 7x + 2, 2x^2 + 3 - 5/x, 5x-1/2, ax^3 + bx^2 + cx + d, x +1/x Answer the following questions : (i) How many of the above ten, are not polynomials ? (ii) How many of the above ten, are quadratic polynomials?
Answers
Answered by
3
Answer:
(i) All of them are polynomial.
(ii) 2 of them are quadratic polynomials.
Explanation:
Answered by
2
Answer:
x² + root 3x + 7( x within root)
2x² + 3 - 5/x ( x in denominator)
x + 1/x (x in denominator)
therefore three are not polynomials
3x^2 + 7x + 2
this is the only quadratic polynomial since the highest power is 2
Explanation:
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