SOLUTION: I need help solving √-x + 7 = x - 1

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Question 382592: I need help solving
√-x + 7 = x - 1
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%28-x%29+%2B7+=x-1
-7 -7
sqrt%28-x%29=x-1-7
...
sqrt%28-x%29=%28x-8%29
...
square both sides
-x =x^2-16x+64
+x +x
x^2-15x+64
Find the roots using quadratic formula
discriminant = -31
.
x1= (15+sqrt(-31))/2
x1=7.5 + 2.7838821814150107i
x2=7.5 - 2.7838821814150107i
...
m.ananth@hotmail.ca