( √7 - √3 ) × ( √3 + √7 )
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Answer:
[since, (a-b)(a+b) = a² - b²]
therefore,
= (√7 - √3) × (√7 + √3)
= (√7)² - (√3)²
= 7 - 3
= 4
hope it will help you, drop thanks if so
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