Question

решите пожалуйста эти 2 номера
если надо помогу с историей 9-11 класс

Answer 1

132.а)
${ (frac{2a}{ {m}^{2} c} )}^{3} div { (frac{4 {a}^{2} }{3m {c}^{2} } )}^{2} = frac{ 8 {a}^{3} }{ {m}^{6} {c}^{3} } div frac{16 {a}^{4} }{9 {m}^{2} {c}^{4} } = frac{8 {a}^{3} }{ {m}^{6} {c}^{3} } times frac{9 {m}^{2} {c}^{4} }{16 {a}^{4} } = frac{1 times 9c}{ {m}^{4} times 2a} = frac{9c}{2 {m}^{4} a}$
б)
${( frac{ - a}{9 {c}^{2} x})}^{3} div { (frac{2a}{3c {x}^{2} } )}^{4} = frac{ - {a}^{3} }{729 {c}^{6} {x}^{3} } div frac{16 {a}^{4} }{81 {c}^{4} {x}^{8} } = frac{ - {a}^{3} }{729 {c}^{6} {x}^{3} } times frac{81 {c}^{4} {x}^{8} }{16 { a }^{4} } = frac{ - 1 times {x}^{5} }{9 {c}^{2} times 16a } = - frac{ {x}^{5} }{144a {c}^{2} }$
133.а)
$frac{8mn}{9a {x}^{2} } div ( frac{6m}{5x} div frac{3 {x}^{2} }{2n} ) = frac{8mn}{9a {x}^{2} } div ( frac{6m}{5x} times frac{2n}{3 {x}^{2} } ) = frac{8mn}{9a {x}^{2} } div frac{4mn}{5 {x}^{3} } = frac{8mn}{9 a{x}^{2} } times frac{5 {x}^{3} }{4mn} = frac{2 times 5x}{9a} = frac{10x}{9a}$
б)
$( frac{0.5ax}{2m} div frac{x}{4 {m}^{2} } ) div frac{m}{a} = ( frac{0.5ax}{2m} times frac{4 {m}^{2} }{x} ) times frac{a}{m} = frac{am}{1} times frac{a}{m} = {a}^{2}$