Question

решите пожалуйста a1 и b1

Answer 1

А1 ) y^-16/y^-12=y^-4

$(frac{1}{2}) ^{-4}=2^{4}=16$

В1) $x * x^{-2}=x^{-1}=frac{1}{x}$

$frac{1}{-2}=-0,5$

Answer 2

$frac{ {y}^{ - 16} }{ {( {y}^ { - 3}) }^{4} } = frac{ {y}^{ - 16} }{ {y}^{ - 12} } = {y}^{ - 4}$
у=1/2
значит, у(-⁴)=2⁴=16
$frac{ {5}^{ - 4} times {5}^{ - 9} }{ {5}^{ - 12} } = frac{ {5}^{ - 13} }{ {5}^{ - 12} } = {5}^{ - 1}$
=1/5
${10}^{ - 1} = frac{1}{10} \ {10}^{ - 2} = frac{1}{100}$
с этого:
$frac{3.2}{10} times frac{2}{100} = frac{6.4}{1000} = 0.0064$
${( {a}^{2} )}^{ - 3} = {a}^{ - 6}$
$frac{ {a}^{ - 9} }{ {a}^{ - 6} } = {a}^{ - 3}$
$frac{1}{ {x}^{ - 1} } = frac{1}{ frac{1}{x} } = x$
$frac{1}{ {x}^{ - 2} } = frac{1}{ frac{1}{ {x}^{2} } } = {x}^{2}$
$frac{x}{ {x}^{2} } = frac{1}{x} = frac{1}{ - 2} = - 0.5$