Question

Упростить
Фото внизу

Answer 1

$frac{ sqrt{5}* sqrt{3}-sqrt{5}- sqrt{3}+1 }{sqrt{7}* sqrt{3}-sqrt{7}+ sqrt{3}-1 } = frac{ (sqrt{5}* sqrt{3}-sqrt{5})- (sqrt{3}-1) }{(sqrt{7}* sqrt{3}-sqrt{7})+ (sqrt{3}-1) }= \ \ = frac{ sqrt{5}*(sqrt{3}-1)-(sqrt{3}-1)}{ sqrt{7}*(sqrt{3}-1)+(sqrt{3}-1)} = frac{(sqrt{3}-1)*(sqrt{5}-1)}{(sqrt{3}-1)*(sqrt{7}+1)}= frac{sqrt{5}-1}{sqrt{7}+1}$