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LyonLyon
@LyonLyon
December 2019
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Ajudem pfv...
(3a-4)²
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DriMiranda
(3a+4)² =
utilizando a²+2.a.b+b²
3a²+2.3a.4+4²
9a²+24a+16
ou
(3a+4) . (3a+4) = usando chuveirinho
(3a.3a)+(3a.4)+(4.3a)+(4.4) =
9a²+12a+12a+16 =
9a²+24a+16
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DriMiranda
(3a+4)²= utilizando a²+2.a.b+b²
DriMiranda
é mais facil
GowtherBr
Vamos lá :
(3a - 4)² = (3a - 4).
(3a - 4)
= 3²a² - 12a - 12a + 4²
= 9a² - 24a + 16
Espero ter ajudado !!!
0 votes
Thanks 0
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Lista de comentários
3a²+2.3a.4+4²
9a²+24a+16
ou
(3a+4) . (3a+4) = usando chuveirinho
(3a.3a)+(3a.4)+(4.3a)+(4.4) =
9a²+12a+12a+16 =
9a²+24a+16
(3a - 4)² = (3a - 4).(3a - 4)
= 3²a² - 12a - 12a + 4²
= 9a² - 24a + 16
Espero ter ajudado !!!