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Alana12
@Alana12
April 2020
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Calcule.
a) (√5+√2)(√5-√2)
b) (√5+√3)(√5-√3)
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poty
Verified answer
a) (√5+√2)(√5-√2)= ---[tipo : (a+b)(a-b)= a²-b²].Então:
(
√5)² - (√2)² = 5 - 2 = 3
b) (√5+√3)(√5-√3) =
(√5)² - (√3)² = 5 - 3 = 2
2 votes
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Verified answer
a) (√5+√2)(√5-√2)= ---[tipo : (a+b)(a-b)= a²-b²].Então:(√5)² - (√2)² = 5 - 2 = 3
b) (√5+√3)(√5-√3) =
(√5)² - (√3)² = 5 - 3 = 2