Since the variable part $p^3$ is the same in every term, just combine the numbers in front: $2$, $-5$, and $4$.

Compute $2-5$, then take that result and add $4$. Whatever number you get becomes the new coefficient of $p^3$.

In Desmos (graphing or scientific), pick a number for $p$ (for example, $p=2$) and type the original expression 2p^3 - 5p^3 + 4p^3 with that value substituted (e.g., 2(2)^3 - 5(2)^3 + 4(2)^3) to find its numeric value.

For the same $p$ value, compute each option (e.g., p^3, 11p^6, -7p^3, p^7 with $p=2$). The choice whose value matches the original expression’s value (and will keep matching for other $p$ values you try) is the equivalent expression.

Look at each term: $2p^3$, $-5p^3$, and $4p^3$. They all have the same variable part, $p^3$, so they are like terms and can be combined by adding their coefficients (the numbers in front).

Take just the coefficients: $2$, $-5$, and $4$. Combine them:

• First do $2-5$ to get a new coefficient.
• Then add $4$ to that result. This gives the single coefficient that will go in front of $p^3$.

Attach your combined coefficient from Step 2 to $p^3$. That gives a single term of the form $\text{(coefficient)}\cdot p^3$. This final term is the simplified expression equivalent to $2p^3 - 5p^3 + 4p^3$, which is $p^3$.