Grade 10 Math
posted by Gianluca on .
Could you please help me with this question: A diver dives from the 3 m board at a swimming pool. Her height, y, in metres, above the water in terms of her horizontal distance, x, in metres, from the end of the board is given by y= x2 + 2x + 3. What is the diver's maximum height?

b over 2a to find x value for max and add that to the 3 metres