Question

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Answer 1

Ответ:

$(3 - \sqrt{2} )(5 + \sqrt{2} ) - ( \sqrt{2 - 1} ) ^{2} = (15 + 3 \sqrt{2} - 5 \sqrt{2} - 2) - (2 - 1) = 13 - 2 \sqrt{2} - 1 = 12 - 2 \sqrt{2} = 2(6 - \sqrt{2} )$

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Answer 2

Объяснение:

(3-√2)(5+√2)-(√(2-1))²=

=15+3√2-5√2-2-(2-1)=

=15+3√2-5√2-2-2+1=12-2√2