Which of the following is not a polynomial? please help

Question

anonymous · Answer

A. http://static.k12.com/bank_packages/files/media/mathml_79efbe3ae6689852ecf588a481d4daa2aba35afd_1.gif B. http://static.k12.com/bank_packages/files/media/mathml_e8f6eaee595097a2389aadad2e92d0948f457496_1.gif C. http://static.k12.com/bank_packages/files/media/mathml_9fcdd1c5a0b1f5c0f781f6e7cd83b79e7fed63a3_1.gif D. http://static.k12.com/bank_packages/files/media/mathml_2ea0b8ef36802753162a183272ab470d02b4dc68_1.gif

anonymous · Answer

@SolomonZelman

solomonzelman · Answer

$\Large\color{black}{ \bf  A)~~~~~~11p-7q    }$

$\Large\color{black}{ \bf  B)~~~~~~8xy^4-5x^3y   }$

$\Large\color{black}{ \bf  C)~~~~~~2-x   }$

$\Large\color{black}{ \bf  D)~~~~~~-\frac{4}{y}  }$

solomonzelman · Answer

What do you think ?

anonymous · Answer

im not sure,i dont understand this lessom

anonymous · Answer

im thinking that its D,im just guessing though

solomonzelman · Answer

Good guess. that is in fact correct.

solomonzelman · Answer

Polynomial.

has more than 1 terms, that involve variables (such as x q p or other unknown numbers)

-4/y  is only one term, and the rest have 2 terms.

anonymous · Answer

thanks @SolomonZelman i didnt understand it at all but now i do

anonymous · Answer

can you help me with one more?

anonymous · Answer

@SolomonZelman