Question

Сократить дробь:$frac{a-9a^{1/2} }{7 a^{1/4} + 21}$

Answer 1

a - 9a^12 _________ 7a^14 + 21 = (a^1/2((a^1/2) - 9)) / 7((a^1/4) + 3) = (a^1/2((a^1/4)-3)(a^1/4)+3)) / 7((a^1/4) + 3) = 1/7(a^1/2)(a^1/4)-3)
воть.. .