Question

Which of the following shows 9x^2y - 4x + 3y^3x - 2y^2 written in standard form? A. 9x2y - 4x + 3y3x - 2y2 B. 3y3x - 2y2 + 9x2y - 4x C. 9x2y - 4x - 2y2 + 3y3x D. 3y3x + 9x2y - 2y2 - 4x

Mathematics

Answer 1

D.
`3 y^(3)x+9 x^(2) y-2 y^(2) -4x`

Take each term and find the degree of the term and then put them in order from highest to lowest:

`y^(3)x=3+1=4`

`x^(2) y=2+1=3`

`y^(2)=2`
x=1

Remember a letter without an exponent is assumed to be a 1.

Hope that helps.