1 answer
(click or scroll down)
To solve the equation \( x^2 + 9 = 45 \), we first isolate \( x^2 \).
1. Subtract 9 from both sides:
\[
x^2 = 45 - 9
\]
\[
x^2 = 36
\]
2. Now, to find \( x \), we take the square root of both sides:
\[
x = \pm \sqrt{36}
\]
\[
x = \pm 6
\]
Thus, the solution set is \{−6, 6\}.
Amelia is the one who has found the correct solution set.