Question

12 calculati a 3radical50-
Radical180-radical18+radical45.

Answer 1

Explicație pas cu pas:

$a = 3 \sqrt{50} - \sqrt{180} - \sqrt{18} + \sqrt{45} = 3 \sqrt{2 \cdot {5}^{2} } - \sqrt{5 \cdot {6}^{2} } - \sqrt{2 \cdot {3}^{2} } + \sqrt{ {3}^{2} \cdot 5} = 15 \sqrt{2} - 6 \sqrt{5} - 3 \sqrt{2} + 3 \sqrt{5} = 12 \sqrt{2} - 3 \sqrt{5}$