Answer:
A'(2, 3)
Explanation:
When a point is reflected across the x-axis, its y-coordinate is negated while its x-coordinate remains unchanged.
Therefore, reflecting point A(2,-3) across the x-axis results in a new point with the same x-coordinate but a negated y-coordinate:
A'(2, 3)
So the coordinates of the reflected point A' are (2, 3).