Written as a simplified polynomial in standard form, what is the result when (x + 5) ^ 2 is subtracted from 1?

1 answer

To solve the problem, we start with \( (x + 5)^2 \) and then subtract it from 1.

First, we need to expand \( (x + 5)^2 \):

\[ (x + 5)^2 = x^2 + 2 \cdot x \cdot 5 + 5^2 = x^2 + 10x + 25 \]

Next, we subtract \( (x + 5)^2 \) from 1:

\[ 1 - (x^2 + 10x + 25) \]

Distributing the negative sign:

\[ 1 - x^2 - 10x - 25 \]

Now, we combine like terms:

\[ 1 - 25 - x^2 - 10x = -x^2 - 10x - 24 \]

Rearranging to write it in standard form, we get:

\[ -x^2 - 10x - 24 \]

So, the final answer is:

\[ -x^2 - 10x - 24 \]