Question

simplify (3+2root2) (3-2root2)​

Answer 1

Answer:

3squre- root2 square

9-2

7

Answer 2

Answer:

here we can apply the formula (a+b)(a-b)=a^2-b^2

here a=3

b=2root 2

(3+2 root2)(3-2root2)

3^2-(2root2)^2=9-8=1

Hence problem solved

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