Match each expression to its equivalent standard form.
a. x^2 + x + 2
b. x^2 + 2x + 2
c. x^2 + 4
d. x^2 - 4x + 8
e. x^2 +16
f. x^2- 4x -4
1. (x + 2i)(x -2i)
2. (x - 2 + 2i)(x - 2 - 2i)
3. (x + 1 + i)(x + 1 - i)

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

Which of the following parabolas opens down?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?