Question

(х-25)($sqrt{x}$=5) и (x-144)(12-$sqrt{x}$)

Answer 1

1)$frac{x-25}{ sqrt{x}+5 } = frac{ (sqrt{x} -5)( sqrt{x} +5)}{ sqrt{x} +5} = sqrt{x} -5$
2)$frac{x-144}{12- sqrt{x} } = frac{ (sqrt{x} -12)( sqrt{x} +12)}{(-1)( sqrt{x} -12)}=-( sqrt{x} +12)=- sqrt{x} -12$