Question: If 2 [log (x + y) - log 5] = log x + log y, then what is the value of x2 + y2? (a)

If 2 [log (x + y) - log 5] = log x + log y, then what is the value of x2 + y2?

(a) 20xy

(b) 23xy

(c) 25xy

(d) 28xy

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