Respuesta :
Answer:
B) maximum value at 39.
Step-by-step explanation:
maximum value at 39
First, set the expression equal to 0.
−x2 − 10x + 14 = 0
Complete the square.
−x2 − 10x = −14
−(x2 + 10x) = −14
−(x2 + 10x + 25) = −39
−(x + 5)2 + 39= 0.
Therefore, the maximum value is 39.