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Find all solutions to the equation,

x-8(sqrt x)+16=0. Is x=16 the only solution?

1 answer

8 sqrt x = x+16

64 x = x^2 + 32 x + 256

x^2 -32 x + 256 = 0

(x- 16)^2 = 0

x = 16 is the only root I see
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