Tristenftw
Tristenftw
07-03-2017
Mathematics
contestada
X^2+6x+9=16, I need to complete the square
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JSStorey
JSStorey
07-03-2017
The first x is x=-7, and the second x=1
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kalvilaafele96
kalvilaafele96
07-03-2017
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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