Question

Efetue as divisões.
a) (27a^5 y)/ (16a²y²) ∶ (15a)/ (8y)

b) (m²-1 )/ (2m) ∶ (m+1)/ (m²)


obs: receberá um obrigada!

Answer 1

$\frac{27a^5y}{16a^2y^2}: \frac{15a}{8y}=$

$\frac{27a^5y}{16a^2y^2}* \frac{8y}{15a}$ (simplificando cruzado)

$\frac{9a^4y}{2a^2y}* \frac{1}{5}=$ ---(multiplicando)

$\frac{9a^4y}{10a^2y}= ---(simplificando)$

$\frac{9a^2}{10}$
_______________________________________________________
$\frac{m^2-1}{2m}: \frac{m+1}{m^2}$

$\frac{(m+1)(m-1)}{2m} * \frac{m.m}{m+1}=$ (simplificando cruzado)

$\frac{m-1}{2}* \frac{m}{1}$=

$\frac{m(m-1)}{2} = \frac{m^2-m}{2}$