In triangle XYZ, A is the midpoint of XY, B is the midpoint of YZ, and C is the midpoint of XZ. Also, AY = 7, BZ = 8, and XZ = 18. What is the perimeter of the triangle ABC?

3x^3(3x^3+2x+5)

step-by-step explanation: by looking at the polynomial, you can see that all three shares the variable x. since 9,6, and 25 all share the gcf of 3, you can factor it out. since the smallest x value of the polynomial is x^3, that is the x value you want to factor out. since if you factor out x^3 then 15x^3 would not have a variable anymore.

huh? im pretty sure it is in 199

step-by-step explanation:

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.