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anonymous
 one year ago
please help I will fan and medal
Part B: Solve 4x^2 + 8x − 5 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used.
anonymous
 one year ago
please help I will fan and medal Part B: Solve 4x^2 + 8x − 5 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used.

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Hero
 one year ago
Best ResponseYou've already chosen the best response.1Step 1, let 8x = 10x  2x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay then how would you rewright it in the appropriate method

Hero
 one year ago
Best ResponseYou've already chosen the best response.1In other words, replace 8x with 10x  2x so that you have 4x^2 + 10x  2x 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay I see so what method would I use to solve this appropriately

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Basically, at this point you can factor by grouping. So I guess that's what you wanted to know right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah and now would I factor by grouping with this problem

Hero
 one year ago
Best ResponseYou've already chosen the best response.1You take the expression 4x^2 + 10x  2x 5 and do the following: 1. Factor the first two terms 2, Factor the last two terms 3. Factor out what is common to both factorizations. Let me know what you get afterwards.

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Congratulations, you did it!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you but my last question is why is this method the one to use

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0does my question make sense? @Hero

Hero
 one year ago
Best ResponseYou've already chosen the best response.1There are a few reasons why: 1. It's algorithmic, meaning it can work with any factorable quadratic expression. 2. It's an application of the distributive property. 3. It's a better method to learn and teach than the mental method.
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