If the two angles are complementary, they add up to 90 degrees. Given the angles are \((x + 2)°\) and \((2x - 4)°\), the equation that represents this relationship is:
\[ (x + 2) + (2x - 4) = 90 \]
So, the written equation is:
\[ (x + 2) + (2x - 4) = 90 \]