Question

2) a)radical 18+radical 288-radical 72-5radical2 b)radical 0,9+radical 169supra36-radical30,25​

Answer 1

Răspuns:

$a) \sqrt{18} + \sqrt{72} - 5 \sqrt{2} = 3 \sqrt{2} + 6 \sqrt{2} - 5 \sqrt{2} = 4 \sqrt{2}$

$b) \sqrt{0.9} + \frac{ \sqrt{169} }{36} - \sqrt{30.25} = \\ \frac{3}{ \sqrt{10} } + \frac{13}{36} - \frac{55}{10} = \frac{3 \sqrt{10} }{10 } + \frac{1}{2} \frac{5}{5} - \\ \frac{55}{10} = \frac{3 \sqrt{10} - 50}{10}$