Y= -2(x-9)(x+7) can you put this into standard form

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles