Question

simplify. (2-√2) (2+√2)​

Answer 1

$(2 - \sqrt{2)} (2 + \sqrt{2} ) \\ \\ =4 - 2 \\ = 2(ans)$

Answer 2

Answer:

answer is 2

Step-by-step explanation:

$(2 - \sqrt{2} )(2 + \sqrt{2} )$

$we know that:(a + b)(a - b) = \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {a}^{2} - {b}^{2}$

so,

$(2 - \sqrt{2} )(2 + \sqrt{2} ) \\ = {2}^{2} - ({ \sqrt{2} })^{2} \\ = 4 - 2 \\ = 2$

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