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Which expressions are polynomials? 

Select each correct answer.

 

- 6x2 + 5x

- x2 + 5x1/5

- -x2 + 5x

- -7x2 + 5/3x

- y

- 4x3 + y

- 2 + s

- x2 - sqrt of x + 2

Guest Jan 29, 2018
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 #1
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 6x^2 + 5x

 x^2 + 5x^(1/5)......no  fractional powers allowed

 -x^2 + 5x

 -7x^2 + (5/3)x

 y

 4x^3 + y

2 + s

- x^2 - sqrt of x + 2    .......  sqrt ( x)  = x^(1/2).....no fractional exponents

 

A plolynomial    has constant coefficients associated with each variable and  non-negative integer powers on these variables

 

So....the polynomials are in  red

 

 

cool cool cool

CPhill  Jan 29, 2018

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