Question
A teacher asked 10 of his students to write a polynomial in one variable on paper. He asked them to handover the paper. The following were the answers given by the students:
𝟐𝒙 + 𝟑, 3x2 + 𝟕𝒙 + 𝟐, 4x3+3x2+2, x3 +√3x+ 𝟕, 𝟕𝒙 + √7 , 5x3−7x+2, 2x2+3−5x, 𝟓𝒙 − 12, ax3+bx2+cx+d, 𝒙 + 1x.
Based on the information above, answer the following questions:
(𝒊) How many of the above ten, are not polynomials?
(𝒊𝒊) How many of the above ten, are quadratic polynomials?