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anonymous
 5 years ago
x^2 + 3x  28 = 0
anonymous
 5 years ago
x^2 + 3x  28 = 0

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0my math teacher said not to factor first :/

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Have you learned the quadratic formula?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[x = \frac{b \pm \sqrt{b^24ac}}{2a}\] In this case a =1 , b = 3 and c = 28

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0like i no how to get this far. x^2 + 3x = 28 and i no that is the first step, then, you are supposed to cut the 3x in half and square it. but im confused because it is a prime and odd number!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What are you trying to achieve with that equation? Are you trying to find the zeros?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0im trying to find the x and the directions say " solve by completing the square."

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ahhh there you go now we can do something with that.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Visit this site. Hope it helps. http://www.purplemath.com/modules/sqrquad.htm
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