Question

subtract.
(9r + 1) - (5r + 1)

Explanation:

Step1: Remove parentheses

To subtract the two polynomials, we first remove the parentheses. Remember that the negative sign in front of the second parentheses affects both terms inside it. So we have:
\(9r + 1 - 5r - 1\)

Step2: Combine like terms

Now we combine the like terms. The terms with \(r\) are \(9r\) and \(-5r\), and the constant terms are \(1\) and \(-1\).
For the \(r\)-terms: \(9r - 5r = 4r\)
For the constant terms: \(1 - 1 = 0\)
Putting these together, we get \(4r+0 = 4r\)

Answer:

\(4r\)