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leva [86]
3 years ago
15

How do I solve x^2 = 2x + 6?

Mathematics
2 answers:
mihalych1998 [28]3 years ago
8 0
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+\sqrt{D}  / 2a 
x1= 2 + 5,29 / 2
x1 =  7,29/2 
x1= 3,645 

------------------
x2= \frac{-b-  \sqrt{D} }{2a} 

x2= 2- 5,29 / 2

x2=-3,29/2
x2=-1,646
Likurg_2 [28]3 years ago
7 0
Work is attached....


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