Question

Rezolvare clasa a VII-ea va roog

Answer 1

Răspuns:

$\sqrt{200} + 2 \sqrt{8} - 3 \sqrt{32} + \sqrt{50} \\ = 10 \sqrt{2} + 4 \sqrt{2} - 3 \times 2 {}^{2} + \sqrt{2} + 5 \sqrt{2} \\ = 10 \sqrt{2} + 4 \sqrt{2} - 3 \times 4 \sqrt{2} + 5 \sqrt{2} \\ = 10 \sqrt{2} + 4 \sqrt{2} - 12 \sqrt{2} + 5 \sqrt{2} \\ = (10 + 4 - 12 + 5) \sqrt{2} \\ = 7 \sqrt{2}$