Darkviz
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how to solve x²+6x=-8 ? by completing the square

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Cheahjimmyviz
x² +6x = -8
x² + 6x + 9 = 9-8                  /    ( 6/2)²  =    9
(x + 3)² =1
x+3  =     + or -  √1
  x =  - 3 + 1 =       -2      or      x  =  -3 -1 = -4