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- \(13+35:(-7)\)
- \(2+6.(-3)\)
- \(96-16:4+9\)
- \(-6-8.(-7-17)+8\)
- \(5.5^2+(5.5)^2\)
- \(-9.\sqrt{\frac{1}{4}}-\left[(\frac{1}{11}-2)-(-2)^3\right]\)
- \(6-\sqrt{193-9.4^2}\)
- \(5+4.8^2-9\)
- \(10-\sqrt{321-2.10^2}\)
- \(3.5^2+(3.5)^2\)
- \(-8-3.(-2-16)+2\)
- \(\sqrt{\dfrac{4}{49}}-\left(\dfrac{3}{14}\right)^2\)
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Verbetersleutel
- \(13+35:(-7)=13+ (-5)=8\)
- \(2+6.(-3)=2+(-18)=-16\)
- \(96-16:4+9=96-4+9=101\)
- \(-6-8.(-7-17)+8=-6-8.(-24)+8=-6-(-192)+8=194\)
- \(5.5^2+(5.5)^2=5.5^2+(25)^2=5.25+625=125+625=750\)
- \(-9.\sqrt{\frac{1}{4}}-\left[(\frac{1}{11}-2)-(-2)^3\right]=-9.\frac{1}{2}-\left[(\frac{1}{11}-2)+8\right]=\frac{-9}{2}-\left[(\frac{-21}{11})+8\right]=\frac{-9}{2}-\left[\frac{67}{11}\right]=\frac{-233}{22}\)
- \(6-\sqrt{193-9.4^2}=6-\sqrt{193-9.16}=6-\sqrt{193-144}=6-\sqrt{49}=6-7=-1\)
- \(5+4.8^2-9=5+4.64-9=5+256-9=252\)
- \(10-\sqrt{321-2.10^2}=10-\sqrt{321-2.100}=10-\sqrt{321-200}=10-\sqrt{121}=10-11=-1\)
- \(3.5^2+(3.5)^2=3.5^2+(15)^2=3.25+225=75+225=300\)
- \(-8-3.(-2-16)+2=-8-3.(-18)+2=-8-(-54)+2=48\)
- \(\sqrt{\dfrac{4}{49}}-\left(\dfrac{3}{14}\right)^2= \dfrac{2}{7} - \dfrac{9}{196}= \dfrac{56}{196} - \dfrac{9}{196}= \dfrac{47}{196}\)