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anonymous
 5 years ago
2x^2 + 7x = 4 how do i solve this by completing the square?
anonymous
 5 years ago
2x^2 + 7x = 4 how do i solve this by completing the square?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0a=2 find out what b is

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thats not by completing the square tho is it ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0this method will help you in long term but if you want shortcut I can show you

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0would you rather learn shortcut?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i just want to know the step by step because i have the answers in the back of the book i just cant get the right answers but my math is all correct

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Short cut 1) Factor out 2 2(x^2 + 7/2x) 2) Take Half of x term 7/2 * 1/2 is 7/4 3) Square it 49/16 4) Since you added(49/16 * 2) you also need add to other side 4+49/8

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay let me write that down

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You have just completed a square 2(x^2+7/2x+49/16) Factor 2(x+7/4)^2=4+49/8

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Divide both side by 2 then I think you can take it from there

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so it be (4+ 49/8) / 2?
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