Question

Simmplify:
(3+√2)(3-√2)

If you can answer correctly, I'll mark you as "Brainliest".
(Hint: use (a-b)² = (a)²-2(a)(b)+(b)² formula)​

Answer 1

Answer:

$(3 + \sqrt{2} )(3 - \sqrt{2} ) \\ = {3}^{2} - { \sqrt{2} }^{2} \\ = 9 - 2 \\ = 7 \\ by \: the \: identity \: {x}^{2} - {y}^{2} = (x + y)(x - y)$

hope this answer will help you

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Answer 2

:

(3+√2)(3-√2)

= 3 2 - √2 2

= 9-2

= 7