What is 8.293 estated by

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

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What is the solution to the equation below? 3/x-2+6=square root x-2 +8