SOLUTION: I need help with this quadric formula
x2-2x+8=0
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Question 120941: I need help with this quadric formula
x2-2x+8=0
Found 2 solutions by checkley71, edjones:
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
X^2-2X+8=0
(X-4)(X+2)=0
X-4=0
X=4 ANSWER.
X+2=0
X=-2 ANSWER.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
x^2-2x+8=0
x^2-2x =-8
x^2-2x+1=-8+1 completing the square.
(x-1)^2=-7
x-1=+-sqrt(-7) sqrt of each side
x=1+-sqrt(7)i
.
Ed
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