Answer :

Sure, let's solve the problem step by step:

Given the polynomial expression to simplify:
[tex]\[ (15x^3 + 10x^2 - 5x) + (5x) \][/tex]

Step 1: Distribute and combine like terms.
- The original polynomial is [tex]\(15x^3 + 10x^2 - 5x\)[/tex].
- We need to add [tex]\(5x\)[/tex] to the polynomial.

Step 2: Identify and combine the like terms.
- The like terms in this expression are the terms that have the same power of [tex]\(x\)[/tex].
- In this case, [tex]\( -5x \)[/tex] and [tex]\( 5x \)[/tex] are like terms.

Step 3: Perform the addition of the like terms.
- Combine [tex]\(-5x\)[/tex] and [tex]\(5x\)[/tex]:
[tex]\[ -5x + 5x = 0 \][/tex]

Step 4: Add the remaining terms of the polynomial.
- Since [tex]\( -5x \)[/tex] and [tex]\( 5x \)[/tex] cancel each other out, we are left with:
[tex]\[ 15x^3 + 10x^2 \][/tex]

So, the simplified form of the given polynomial expression is:
[tex]\[ 15x^3 + 10x^2 \][/tex]