The prime factorization of 20xy is 22x5xxxy
5xy (2x - 3y + 4 )
9
Nothing is a factor BY ITSELF; you can say that one expression is a factor OF ANOTHER EXPRESSION. IF you don't specify the other expression, the question is meaningless.
It is 5*f where f is an expression.
2*2*5*x*y
2 * 2 * 5 * x * y
It is an algebraic expression
2,5,10,x
4xy
The expression has no rational factors.
35
(2x - 3y)(2x - 7y)
The prime factorization of 20xy is 22x5xxxy
5xy (2x - 3y + 4 )
If you're looking to factor this expression, then you need to find two values that add up -20, and which multiply to make 4. Unfortunately, no such terms exist, so this expression can not be factored.
This is technically a partial derivative, represented as ∂(20xy)/∂x. The way to calculate this is simple, treat y as a constant, like 20 is in this case. Therefore, the expression is simplified to 20*y*d(x)/dx. d(x)/dx is just 1, so the answer is 20y.