Question

Помогите, надо расписать

Answer 1

1)

$\displaystyle\frac{4m^{4}a }{6x^{2} } *\frac{2x^{2} }{4m^{3} a^{2} } =\frac{m}{3} *\frac{1}{a}=\frac{m}{3a}$

2)

$\displaystyle\frac{m}{3a} :\frac{10+2a}{6a^{2} } =\frac{m}{3a} *\frac{6a^{2} }{10+2a} =\frac{m}{1} *\frac{2a}{10+2a} =\frac{m}{1} *\frac{2a}{2(5+a)} =\frac{ma}{5+a}$

3)

$\displaystyle\frac{ma}{5+a} *\frac{a^{2}-25 }{2m^{2} } =\frac{ma}{5+a} *\frac{(a+5)(a-5)}{2m^{2} } =\frac{ma}{1} *\frac{a-5}{2m^{2} } =\frac{a^{2}-5a }{2m}$

4)

$\displaystyle\frac{a^{2} -5a}{2m} :\frac{a^{2}-10a+25 }{6m} =\frac{a(a-5)}{2m} *\frac{6m }{(a-5)^{2} } =\frac{a}{2m}*\frac{6m}{a-5} =\boxed{\frac{3a}{a-5} }$