a) \(A=3\sqrt[]{16}-4\sqrt[]{\dfrac{1}{4}}\)
\(\Rightarrow A=3.4-4.\dfrac{1}{2}\)
\(\Rightarrow A=12-2=10\)
b) \(B=-5\sqrt[]{\dfrac{9}{16}}+4\sqrt[]{0,36}-6\sqrt[]{0,09}\)
\(\Rightarrow B=-5.\dfrac{3}{4}+4.0,6-6.0,3\)
\(\Rightarrow B=-5.0,75+2,4-1,8\)
\(\Rightarrow B=-3,75+0,6=-3,15\)
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