Question

simplify (3+✓2) (3-✓2)
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Answer 1

Answer:

1

Step-by-step explanation:

(3+√2)(3-√2) is the same as (a+b)(a-b)

do the answer will be the same a²-b² or 3²-(√2)²

That will be equal to 9-2 = 7

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Answer 2

Answer:

Here, the answer is 7.

Step-by-step explanation:

Here, As given in our question,

=(3+root2) (3-root2)

Let us take 3=a, root2=b

As they both are in multiplication,

Here the identity is(a+b) (a-b)=(a^2-b^2)

By applying the identity, we get,

=[3^2-(root2)^2]

=9-2

=7

Hence, our answer is 7.

Thank you.