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Question

Which of the following is a polynomial of degree 2?

A
2x22x1.5+1
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B
3x2+xx2+22x2
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C
(x2+x+2)x
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D
2x3+3x22x3+1
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Solution

The correct option is D 2x3+3x22x3+1
(2x22x1.5+1) is not a polynomial since it contains a term in which the variable has fractional exponent.
(3x2+xx2+22x2)=(x+2) is a polynomial of degree 1,
(x2+x+2)x=(x3+x2+2x) is a polynomial of degree 3.
(2x3+3x22x3+1)=(3x2+1) is a polynomial of degree 2.

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