How do you determine if the vertex is a maximum or a minimum from the quadratic equation

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36