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anonymous
 one year ago
A quadratic equation is shown below:
9x2  16x + 60 = 0
Part A: Describe the solution(s) to the equation by just determining the radicand. Show your work.
Part B: Solve 4x2 + 8x  5 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used.
Part C: Solve 2x2 12x + 5 = 0 by using a method different from the one you used in Part B. Show the steps of your work.
anonymous
 one year ago
A quadratic equation is shown below: 9x2  16x + 60 = 0 Part A: Describe the solution(s) to the equation by just determining the radicand. Show your work. Part B: Solve 4x2 + 8x  5 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used. Part C: Solve 2x2 12x + 5 = 0 by using a method different from the one you used in Part B. Show the steps of your work.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for part a would I solve by using the quadratic formula? @Hero

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then for part b by finding the zeros?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and for part c by completing the square?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Yes, use the quadratic formula for part A

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Complete the Square for part C

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this is what I got for part A what does it mean??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok factor for part b: (2x+5)(2x−1) which shows the xintercepts of x=−5/2,1/2

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Actually, what I believe you're supposed to do is use b^2  4ac to determine if part A has any real solutions.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Part C: x=3± 26‾‾‾√ 2

Hero
 one year ago
Best ResponseYou've already chosen the best response.1If b^2  4ac is negative, then the solutions for the equation for part A are not real.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok thats what I did but i got that answer, so woulf that mean that it has no solutions??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so are they negative?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0there is not solutions because when you plug in 16^2 4(9)(60) you get 32  2160 = 2128

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Well, whatever the number is, it IS negative, but the number is not correct.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would i only show my work up to there and then determine that there is no solutions @Hero

Hero
 one year ago
Best ResponseYou've already chosen the best response.1I believe that's the intent, yes.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok thank you and for part b and c factor one and complete the square for the other?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but what would i put to say why i choose it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0also I have another question for you can you help? @Hero

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Post it as a separate question.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@TheSmartOne what would I write to say why I choose factoring for part b and completing the square for part c?

TheSmartOne
 one year ago
Best ResponseYou've already chosen the best response.0Because there are only 3 ways to solve a quadratic equation  Factoring, Completing the Square, and the Quadratic Formula so you had to chose one of them, and then chose another method. :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thanks so much! @TheSmartOne
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