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MarianaMarinho
@MarianaMarinho
July 2022
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2 - Calcule o produto de cada um:
a) (2 √5 + 8) . (√5 -1)
b) (-5 + 3 √2) . (4- √2)
c) (√6 -2) . (9 - √6)
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3478elc
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2 - Calcule o produto de cada um:a) (2 √5 + 8) . (√5 -1) = (2 √5 + 8)(√5 -1)==> 2V25 -2v5+8V5-8
==> 2.5-8+6V5==> 10-8 + 6V5 ==> 2 + 6V5
b) (-5 + 3 √2) . (4- √2) = - 20+ 5V2+12V2-3V4==> -20-2.3+17V2
==>-20-6+17V2 ==> - 26 + 17V2
c) (√6 -2) . (9 - √6) = 9V6 -V36 - 18 + 2V6==> 11V6-6-18==> - 24 + 11V6
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MarianaMarinho
Muuuito obrigada !! mas pra que serve o V ?
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Verified answer
2 - Calcule o produto de cada um:a) (2 √5 + 8) . (√5 -1) = (2 √5 + 8)(√5 -1)==> 2V25 -2v5+8V5-8
==> 2.5-8+6V5==> 10-8 + 6V5 ==> 2 + 6V5
b) (-5 + 3 √2) . (4- √2) = - 20+ 5V2+12V2-3V4==> -20-2.3+17V2
==>-20-6+17V2 ==> - 26 + 17V2
c) (√6 -2) . (9 - √6) = 9V6 -V36 - 18 + 2V6==> 11V6-6-18==> - 24 + 11V6