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The solution of the equation `(log)_7(log)_5(sqrt(x+5)+sqrt(x)=0`is...

Answer» `log_7 (log_5 (sqrt(x+5)+sqrtx))=0`
`log_5(sqrt(x+5)+sqrtx))=7^0=1`
`sqrt(x+5)+sqrtx=5^1=5`
Squaring both sides
`x+5+x+2sqrtxsqrt(x+5)=25`
`2sqrtxsqrt(x+5)=25-5-2x`
`2sqrtxsqrt(x+5)=20-2x=2(10-x)`
`sqrtxsqrt(x+5)=10-x`
Squaring both sides
`x(x+5)=(10-x)^2`
`x^2-5x=x^2-20x+100`
`25x=100`
`x=4`


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