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anonymous
 4 years ago
Does anyone know how to do a problem by completing the square? I'm so confused.
anonymous
 4 years ago
Does anyone know how to do a problem by completing the square? I'm so confused.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0but best to work with a specific example

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Even the Great Satellite stands ready to help you.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0example: 4x^2 + 8x + 1 Using a^2 + 2ab + b^2 = (a + b)^2, we have (2x + 1)^2 There's other formulas.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0like a^2  2ab + b^2 = (a  b)^2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0step number one is to divide by three and get \[x^22x3=0\] then add 3 to both sides and get \[x^22x=3\] and now we are ready to "complete the square" although we can also solve this one by factoring

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0half of 2 is 1 and \[(1)^2=1\] so you can write \[x^22x=3\] and then \[(x1)^2=3+1=4\] the last step was adding 1 to both sides so that the left hand side is now a perfect square

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0then solve as \[(x1)^2=4\] \[x1=2\] or \[x1=2\] so \[x=3\] or \[x=1\]
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