Question

$\sqrt{9 + 9 \sqrt{64} } - \sqrt{ {13 }^{2} - 5 {}^{2} } + 100 \times \sqrt{0.0324} =$
am nevoie urgent ! dau coroana ​

Answer 1

$\sqrt{9+9\sqrt{64}}-\sqrt{13^2-5^2}+100*\sqrt{0,0324}=\\ \sqrt{9+9*8}-\sqrt{169-25}+100*\sqrt{\frac{324}{10000}}=\\ \sqrt{9+72}-\sqrt{144}+100*\sqrt{\frac{81}{2500}}=\\ \sqrt{81}-\sqrt{144}+100*\frac{\sqrt{81}}{\sqrt{2500}}=\\ 9-12+100*\frac{9}{50}=\\ 9-12+18=15.$

/robertinni