Question

Пожалуйста очень срочно!

Answer 1

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Answer 2

$\sqrt{1\frac{9}{16} } -10\sqrt{1.69}= \sqrt{\frac{25}{16} }-10\sqrt{1.69} =\frac{5}{4}-10*1.3 =\\\\=\frac{5}{4} -13=\frac{5-13*4}{4}=\frac{5-52}{4}= -\frac{47}{4}$