\(a,\sqrt{0,16}.\sqrt{225}-\sqrt{625}:\sqrt{\dfrac{1}{25}}\\ =\sqrt{0,4^2}.\sqrt{15^2}-\sqrt{25^2}.\sqrt{5^2}\\ =0,4.15-25.5\\ =6-125=-119\)
\(b,\sqrt{5^2+12^2}-\sqrt{\sqrt{256}}\\ =\sqrt{169}-\sqrt{\sqrt{16^2}}\\ =\sqrt{13^2}-\sqrt{4^2}\\ =13-4\\ =9\)
\(a,\sqrt{0,16}.\sqrt{225}-\sqrt{625}:\sqrt{\dfrac{1}{25}}\\ =\sqrt{\left(0,4\right)^2}.\sqrt{\left(15\right)^2}-\sqrt{\left(25\right)^2}:\sqrt{\left(\dfrac{1}{5}\right)^2}\\ =0,4.15-25:\dfrac{1}{5}=6-125=-119\)
\(b,\sqrt{5^2+12^2}-\sqrt{\sqrt{256}}\\ =\sqrt{25+144}-\sqrt{\sqrt{\left(16\right)^2}}\\ =\sqrt{169}-\sqrt{16}=\sqrt{\left(13\right)^2}-\sqrt{\left(4\right)^2}=13-4=9\)
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