tarunyag
tarunyag
21-04-2016
Mathematics
contestada
How do I solve x^2 = 2x + 6?
Respuesta :
Аноним
Аноним
21-04-2016
Work is attached....
Answer Link
Arvi
Arvi
21-04-2016
x^2-2x-6=0
D = b^2 - 4ac
a= 1
b= -2
c=-6
D= -2^2 - 4 *1* -6
D = 4 +24
D= 28
x1 = -b+[tex] \sqrt{D} [/tex] / 2a
x1= 2 + 5,29 / 2
x1 = 7,29/2
x1= 3,645
------------------
x2= [tex] \frac{-b- \sqrt{D} }{2a} [/tex]
x2= 2- 5,29 / 2
x2=-3,29/2
x2=-1,646
Answer Link
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