SOLUTION: sqrt(x-3) + sqrt (x+5) = 4 Isolating one radical (sqrt x-3)^2 = (4 - sqrt(x+5))^2 Using the principle of powers - squaring both sides x - 3 = 16

SOLUTION: sqrt(x-3) + sqrt (x+5) = 4 Isolating one radical (sqrt x-3)^2 = (4 - sqrt(x+5))^2 Using the principle of powers - squaring both sides x - 3 = 16 - 8 (sqrt (x+5)) + (x+5) What I

Question 439831: sqrt(x-3) + sqrt (x+5) = 4 Isolating one radical
(sqrt x-3)^2 = (4 - sqrt(x+5))^2 Using the principle of powers - squaring both sides
x - 3 = 16 - 8 (sqrt (x+5)) + (x+5)
What I would like to know is where does the 8 come from?
Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
Remember from algebra the formula: in our case:

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