va rog nu inteleg exercitiile de acest fel
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(2√2 + 1)(2√2 + 2) = 2√2 · 2√2 + 2√2 · 2 + 1·2√2 + 1·2 = 2·2 · √(2·2) + 4√2 + 2√2 + 2 = 4√4 + 6√2 + 2 = 4·2 + 6√2 + 2 = 8 + 6√2 + 2 = 10 + 6√2
Explicație pas cu pas:
[tex]2 \sqrt{2 } \times 2 \sqrt{2} + 2 \sqrt{2} \times 2 + 2 \sqrt{2} + 2 \\ 8 + 4 \sqrt{2} + 2 \sqrt{2} + 2 = \\ 10 + 6 \sqrt{2} [/tex]