Question

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

Answer 1

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 

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x2= $\frac{-b- \sqrt{D} }{2a}$ 

x2= 2- 5,29 / 2

x2=-3,29/2
x2=-1,646

Answer 2

Work is attached....