Question

pls seolve these urgent one

Answer 1

$log_{7}(1) = 0$
so
$log_{5}( \sqrt{x + 5} + \sqrt{x} ) = 1$
again
$log_{5}(5) = 1$
so
$\sqrt{x + 5} + \sqrt{x} = 5$
or √(x+5)=5-√x
or x+5=25+x-10√x
or 10√x=20
or √x=2
or x=4...........(ans)