To solve the equation \( 2^{2x + 2} = 2^{3x} \), we can set the exponents equal to each other since the bases are the same:
\[ 2x + 2 = 3x \]
Now, we can solve for \( x \):
- Subtract \( 2x \) from both sides: \[ 2 = 3x - 2x \] \[ 2 = x \]
So, the solution to the equation is \( x = 2 \).
From your provided responses, the correct answer is:
2