the simplification of (5+√7) (5-√7)
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Answer:
18
Step-by-step explanation:
(5 + √7) (5 - √7)
=> (5)² - (√7)²
[by the formula (a+b)(a-b) = a² - b², here a = 5 and b = √7]
=> 5² - √7²
=> 25 - 7
=> 18
Hence (5 + √7) (5 - √7) = 18
hope it helps.
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