Question

simplify the following equation using identities :(√10+√7)(√10-√7)​

Answer 1

the ans is 3

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Answer 2

Answer:

$= > 3$

Step-by-step explanation:

$Since\: \: x {}^{2} - y {}^{2} = ( x +y )(x - y)$

$Therefore \: ( \sqrt{10} + \sqrt{7} )( \sqrt{10} - \sqrt{7} ) \\ = ( \sqrt{10} ) {}^{2} - ( \sqrt{7}) {}^{2} \\ \: \: \: = 10 - 7 = > 3$