Question

Simplify (√7-√2)(√7+√2) ​

Answer 1

Answer:

Indentity: (a+b)(a−b)=a

2

−b

2

(

7

+2)(

7

−2)=

7

2

−2

2

=7−4=3

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Answer 2

Step-by-step explanation:

$= \sqrt{7} ^{2} - { \sqrt{2} }^{2}$

$= 7 - 2$

$= 5$

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