Question

1. find the value of $7 + x^3$ when $x$ is 2.

Explanation:

Step1: Substitute x = 2 into \(x^3\)

We know that \(x = 2\), so \(x^3=2^3\). Calculating \(2^3\), we get \(2\times2\times2 = 8\).

Step2: Add 7 to the result of \(x^3\)

Now we need to find the value of \(7 + x^3\). We already found that \(x^3 = 8\), so we substitute that in: \(7+8\).
Calculating \(7 + 8\) gives us 15.

Answer:

15