Question

помогите, даю 50 баллов!)​

Answer 1

$frac{a}{sqrt{a}+sqrt{b}}-frac{asqrt{a}}{a+b+2sqrt{ab}}=frac{a}{sqrt{a}+sqrt{b}}-frac{asqrt{a}}{(sqrt{a}+sqrt{b})^2}=frac{a(sqrt{a}+sqrt{b})-asqrt{a}}{(sqrt{a}+sqrt{b})^2}=\\=frac{acdot (sqrt{a}+sqrt{b}-sqrt{a})}{(sqrt{a}+sqrt{b})^2}=frac{asqrt{b}}{(sqrt{a}+sqrt{b})^2}$