Divide the following polynomials, then place the answer in the proper location on the grid. write answer in descending powers of x. (27x 4 - 18x 3 + 9x 2) ÷ 3x

We have the following expression:
 (27x 4 - 18x 3 + 9x 2) ÷ 3x
 Dividing each term between 3x we have:
 9x3 - 6x2 + 3x
 We can check the result:
 (9x3 - 6x2 + 3x) * (3x)
 = (27x4 - 18x3 + 9x2)
 Division OK.
 
 The result of the division is:
 9x3 - 6x2 + 3x

Idon’t know actually i’m in 5th grade and don’t know

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.