Question

3 minus root 7, 3 + root 7
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Answer 1

Answer:

(3-√7)(3+√7)

3²-(√7)². [√a²=a]

9-7

=2

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Answer 2

Answer:

2

Step-by-step explanation:

(3-√7)(3+√7)

9-7=2

(a-b)(a+b)=a^2-b^2