Question

Сократите дробь: 1) у²+у/у², 2) а²-2а/а²-4

Answer 1

$frac{ y^{2}+y }{y ^{2} } = frac{y(y+1)}{y ^{2} }= frac{y+1}{y} \\ frac{ a^{2}-2a }{ a^{2} -4}= frac{a(a-2)}{(a-2)(a+2)}= frac{a}{a+2}$