nick496
nick496
07-05-2018
Mathematics
contestada
What is the answer to this
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Cowmilk
Cowmilk
07-05-2018
[tex] {x}^{2} - 9x - 36 = 0 \\ (x - 12)(x + 3) = 0 \\ x - 12 = 0 \\ x = 12 \\ x + 3 = 0 \\ x = - 3[/tex]
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altavistard
altavistard
07-05-2018
x^2 - 9x - 36 = 0
Note that one possible set of factors is (x-12)(x+3). Why? Because (-12)(3) = -36 and -12x + 3x = -9x.
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