\sqrt{169} * 0,1^-{2}+ \sqrt{80} * \sqrt{5}
\sqrt{169} * 0,1^-{2}+ \sqrt{80} * \sqrt{5} =13*10²+√400=1300+200=1500
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\sqrt{169} * 0,1^-{2}+ \sqrt{80} * \sqrt{5} =13*10²+√400=1300+200=1500