Question

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Answer 1

$frac{ {a}^{2} - 36 {b}^{2} }{ {a}^{2} } times frac{a}{a + 6b } =$
$frac{(a - 6b)(a + 6b)}{ {a}^{2} } times frac{a}{a +6b } =$
$frac{a - 6b}{a} times frac{1}{1} =$
$frac{ sqrt{32} - 6 sqrt{50} }{ sqrt{32} } =$
$frac{4sqrt{2} - 30 sqrt{2} }{ 4sqrt{2} } = frac{ sqrt{2} times (4 - 30) }{4 sqrt{2} }$
$frac{(4 - 30) }{4 } = frac{ - 26}{4} = - 6.5$
Ответ : -6.5