Polynominals

[bprice]

I need to indicate the degree of these resulting polynominals. 1) (-2x^2y+xy)+(4x^2y+7xy) and the product of (x+9y)(6x+7y)

 

[garf]

the first problem is not a polynomial and the second is of second degree

 

[masters]

the first problem is not a polynomial

Actually, it is.

I need to indicate the degree of these resulting polynominals. 1) (-2x^2y+xy)+(4x^2y+7xy) and the product of (x+9y)(6x+7y)

Hi bprice,

Combining terms in your first polynomial expression....

\(\displaystyle (-2x^2y+xy)+(4x^2y+7xy)=-2x^2y+xy+4x^2y+7xy=\boxed{2x^2y+8xy}\)

The degree of the first term is 3. The degree of the second term is 2. The degree of the polynomial is 3.