Question

Raducal lung 30 la patrat minus 18 la patrat plus radical lung 24 la patrat plus 10 la patrat ​

Answer 1

Răspuns:

$\sqrt{30^{2}-18^{2}}+\sqrt{24^{2}+10^{2}}=\sqrt{(30-18)(30+18)}+\sqrt{2^{2}(12^{2}+5^{2})}=\sqrt{12*48}+\sqrt{2^{2}(144+25)}=\sqrt{12*12*4} +\sqrt{2^{2}*169}=\sqrt{12^{2}*4}+2*13=12*2+2*13=2(12+13)=2*25=50$

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