Question

упростите выражение (а/6-6/а)*(1/6+а + 1/6-а)

Answer 1

$= frac{a {}^{2} - 36 }{6a {}^{} } times frac{6 - a + 6 + a}{(6 + a)(6 - a)} = frac{(a - 6)(a + 6)}{6a} times frac{12}{(6 +a) times ( - (a - 6)) } = - frac{1}{a} times 2 = - frac{2}{a}$