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OpenStudy (anonymous):
Solve x2 + 4x – 12 = 0 by completing the square.
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OpenStudy (amoodarya):
x2 + 4x – 12 = 0 (x-2)^2-4-12=0 (x-2)^2-16=0 (x-2)^2=16 can you go on ?
OpenStudy (anonymous):
would x be 2, -6
OpenStudy (amoodarya):
no try it again!
OpenStudy (amoodarya):
(x-2)^2=16 (x-2)=+-4
OpenStudy (amoodarya):
x-2=4 x-2=-4
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OpenStudy (anonymous):
x+2=±4 ?
OpenStudy (amoodarya):
ok x-2=4 x=6 x-2=-4 x=-2
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