Question #54917

1 Answer
Ben G.
Sep 25, 2017

b, #x^2+2#

Explanation:

A quadratic is an expression or equation where the highest power of #x# is two (2), for example #x^2+2x+1#.

Answers (a) and (d) have a highest power of one (i.e. #x^1=x#), and (c) has a highest power of three (#x^3#). (b) has a highest power of two (#x^2#), and so is a quadratic.

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