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HellerZanchii
@HellerZanchii
December 2019
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( v-2) ( v+2) = 14 ...............................
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emicosonia
( v-2) ( v+2) = 14 ...............................
(v - 2)(v + 2) = 14
(v² + 2v - 2v - 4) = 14
v² 0 - 4 = 14
v² - 4 = 14
v² = 14 + 4
v² = 18 fatora 18| 2
v = + - √18 9| 3
3| 3
1/ = 2.3.3.
= 2.3²
v = + - √2.3² ( elimina a √(raiz quadrada) com o (²)) fica
v = + - 3√2
assim
v' = - 3√2
v" = + 3√2
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Comentários
( v-2) ( v+2) = 14
v²-2²=14
v²+4=14
v²=14-4
v²=10
v=
√10
0 votes
Thanks 0
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(v - 2)(v + 2) = 14
(v² + 2v - 2v - 4) = 14
v² 0 - 4 = 14
v² - 4 = 14
v² = 14 + 4
v² = 18 fatora 18| 2
v = + - √18 9| 3
3| 3
1/ = 2.3.3.
= 2.3²
v = + - √2.3² ( elimina a √(raiz quadrada) com o (²)) fica
v = + - 3√2
assim
v' = - 3√2
v" = + 3√2
v²-2²=14
v²+4=14
v²=14-4
v²=10
v=√10