Question

Срочно помогите все з. ​

Answer 1

Объяснение:

№1 и 2:

$1) \: \frac{12}{ {c}^{2} } \times \frac{c}{3} = \frac{4}{c} \\ 2) \: \frac{n}{3} \div \frac{n}{4} = \frac{4}{3}$

№3: А) х≠0, х=5

№4:

$1) \: - \frac{2p^{2} }{15 {c}^{2} } \times ( - \frac{3c}{8 {p}^{2} } ) = \frac{1}{5 \times 4} = \frac{1}{20} \\ 2) \: \frac{ {a}^{2} + ab}{t^{2} } \times \frac{tp}{ {a}^{2} + 2ab + {b}^{2} } = \\ = \frac{a(a + b)}{t} \times \frac{p}{(a + b)^{2} } = \frac{a}{t} \times \frac{p}{a + b} = \frac{ap}{at + bt} \\ 3) \: - \frac{2 {a}^{2} }{9b {}^{3} } \div \frac{8 {a}^{3} }{27b} = - \frac{2 {a}^{2} }{9 {b}^{3} } \times \frac{27b}{8 {a}^{3} } = \frac{3}{b {}^{2} \times 4a} = \frac{3}{4a {b}^{2} } \\ 4) \: \frac{ {b}^{2} - 16}{3b + 6} \div \frac{2b + 8}{5b + 10} = \frac{(b - 4)(b + 4)}{3(b + 2)} \times \frac{5(b + 2)}{2(b + 4)} = \\ = \frac{5(b - 4)}{6} = \frac{5b - 20}{6}$

№5:

$1) \: ( - \frac{3 {c}^{5} }{ {m}^{2} } )^{3} = - \frac{27 {c}^{15} }{ {m}^{6} } \\ 2) \: ( \frac{ {c}^{3} p}{d {}^{4} } ) {}^{6} = \frac{ {c}^{18} {p}^{6} }{ {d}^{24} }$