CPM Homework Help : INT3 Problem 1-57

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1-57.

Which of the following equations are polynomial functions? For each one that is not, justify why not.

$y=3x^2+2x^2+x$

$y=(x-1)^2(x-2)^2$

$y=x^2+2^x$

$y=3x-1$

$y=(x-2)^2-1$

$y^2=(x-2)^2-1$

$y=\frac{1}{x^2}+\frac{1}{x}+\frac{1}{2}$

$y=\frac{1}{2}x+\frac{1}{3}$

$y=x$

$y=-7$

Answer:

The equations in parts (c), (f), and (g) are not polynomials. Refer to the Math Notes box for this lesson if you are confused.

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