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Bogdan [553]
3 years ago
12

X^2+6x+9=16, I need to complete the square

Mathematics
2 answers:
aksik [14]3 years ago
7 0
The first x is x=-7, and the second x=1
IgorLugansk [536]3 years ago
5 0
X² + 6x + 9 = 16
x² + 6x + 9 -16 = 16 -16
x² + 6x + 9 -16 = 0
x² + 6x -7 = 0

and then find the factor:
(x + 7) (x  - 1) = 0
x + 7 = 0    ;    x - 1 = 0
x = -7         ;    x = 1
and there is your factors
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