Question

Aratati ca
$6 \sqrt{2} - 2( \sqrt18 - 1) + 2$
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Answer 1

Răspuns:

6√2-2(√18-1)+2

√18=3√2

6√2-2(3√2-1)+2

6√2-6√2+2+2

(6√2 cu -6√2 se reduc)

2+2=4