Question

What is the domain of `7x^3 + 5x^2` ?

I understand that the domain is like the way the line is continuing through 'x' or something similar like that but I'm not sure what the domain of this would be. Would it be all real numbers?

Answer 1

The Domain is all real numbers

Explanation:

This is a simple question. Domain means the possible value of x which will result in a real solution to the equation.So, intuitively the domain of this function is set of all real numbers R.

Answer 2

Yes all are real numbers except from `0`

Explanation:

The domain of `7x^3 + 5x^2`

domain `x` = integers except from zero

Reason `7x^3 + 5x^2`, when `x = 0`

`7(0)^3 + 5(0)^2`

`7(0) + 5(0)`

`0 + 0` `->` null