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abbie1
Group Title
When solving x^2  4x = 7 by completing the square what value is added to both sides of the equation?
 one year ago
 one year ago
abbie1 Group Title
When solving x^2  4x = 7 by completing the square what value is added to both sides of the equation?
 one year ago
 one year ago

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CalebBeavers Group TitleBest ResponseYou've already chosen the best response.1
coefficient of x divided by 2 and then squared (4/2)^2=?
 one year ago

abbie1 Group TitleBest ResponseYou've already chosen the best response.0
Ok so 4? I work it out and 2 and 4. So how do you know which one it is? @CalebBeavers
 one year ago

CalebBeavers Group TitleBest ResponseYou've already chosen the best response.1
4/2=2 2^2=4
 one year ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
\[x^24x=7\] \[(x2)^2=7+4=3\] \[x2=\pm\sqrt{3}i\]\[x=2\pm\sqrt{3}i\]
 one year ago
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