Please help, I will fan+medal
Are these expressions Polynomials?
f(x)=3x+(4/3)x^3 -7

g(x)=-5x^3 +x - (3/x)

h(x)=x^3 √5 +x -3

k(x)= k(x)=25x^2-x^3+x^5

Question

Please help, I will fan+medal
Are these expressions Polynomials? 
f(x)=3x+(4/3)x^3 -7

g(x)=-5x^3 +x - (3/x) 

h(x)=x^3 √5 +x -3

k(x)= k(x)=25x^2-x^3+x^5

anonymous · Answer

Can you help me @triciaal

triciaal · Answer

about to give you the book definition of a polybomial

triciaal · Answer

a polynomial is a monomial or sum of monomials.

anonymous · Answer

Im still really confused with which ones are polynomials and which ones arent

anonymous · Answer

I know that the last one is a polynomial forsure

triciaal · Answer

usually written in standard form means arranged in decreasing  order from largest exponent to smallest

anonymous · Answer

It doesnt require them to be in standard form

anonymous · Answer

its just asking if they are polynomials

triciaal · Answer

a monomial is a number, a variable or the product of a number  and one or more variables with whole number exponents.

triciaal · Answer

based on definition of monomial not g or h because those do not have whole number exponents.

anonymous · Answer

Thats what I thought as well

anonymous · Answer

Can you help me with some more problems?

triciaal · Answer

go ahead and post

anonymous · Answer

Okay ill post here. Find the itnercepts  and relative extrema for the graph of these functions. 

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