Question

http://answers.yahoo.com/question/index?qid=20130824181827AAnqfF5

Answer 1

ok For the second one were you have to make your own here's an example:
-x^2 + 8x − 20 = 0

First, find factors of -20 that add up to 8:

1 * -20
2 * -10
4 * -5
-1 * 20
-2 * 10
-4 * 5

-2 and 10 add up to so now we have:

(x - 2) and (x + 10)

Make them equal 0:

x-2=0 and x+10=0

x=2 and x=-10

The vertex would be -36 and the graph would open downward because the ax is negative. And it would have a maximum point.

Answer 2

with this you should have an idea to how to solve the first one

Answer 3

thanks :)