Question

combine any like terms in the expression. if there are no like terms, rewrite the expression. 8u + u - 9u

Explanation:

Step1: Identify like terms

All terms \(8u\), \(u\), and \(-9u\) are like terms (same variable \(u\)).

Step2: Combine coefficients

First, add the coefficients of \(8u\) and \(u\): \(8 + 1 = 9\), so \(8u + u = 9u\). Then subtract \(9u\) from this result: \(9u - 9u\).

Step3: Simplify the expression

\(9u - 9u = 0\) (since the coefficients subtract to zero).

Answer:

\(0\)