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Suavez
@Suavez
December 2019
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Simplifique as expressões algébricas a seguir todas as resoluções
a) -9xy + 12x - 5y + 2 - 10x + 4xy - 7 + y
b) 2/5 a³b -3/4 a³b + 1/2 -2a³b + 5
c) -3t² + 5v -5v + t²/2 +4
d)1,5a²b³ + 4,5a³b² - a²b³ - 3,2a³b² +6,4a²b³ -a³b²
e)a-4 +b -2 +a² +3 -4a² +7a _3b+0,8
f) -ab²/2 +a^4 + 3ab²/5 - 0,3 + 3a^4/2 - 1,5
g)2xy - xy² + 3xy² - 3xy/4 -x²y
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rodrigoreichert
Verified answer
a)
-9xy + 12x - 5y + 2 - 10x + 4xy - 7 + y =
-5xy + 2x - 4y - 5
b) 2/5 a³b - 3/4 a³b + 1/2 - 2a³b + 5 =
(2*4)/20 a
³b - (3*5)/20 a³b - (2*20)/20 a³b + 5/10 + 50/10 =
8/20 a³b - 15/20 a³b - 40/20 a³b + 55/10 =
-47/20 a³b + 55/10
c)
-3t² + 5v - 5v + t²/2 + 4 =
-6t
²/2 + t²/2 + 4 =
-5t²/2 + 4
d)
1,5a²b³ + 4,5a³b² - a²b³ - 3,2a³b² + 6,4a²b³ - a³b² =
6,9a
²b³ + 0,3a³b²
e)
a - 4 + b - 2 + a² + 3 - 4a² + 7a - 3b + 0,8 =
-3a
² + 8a - 2b - 2,2
f)
-ab²/2 + a
⁴ + 3ab²/5 - 0,3 + 3a⁴
/2 - 1,5 =
2a
⁴/2 + 3a⁴/2 - 5ab²/10 + 6ab²/10 - 1,8 =
5a⁴/2 + ab²/10 - 1,8
g)
2xy - xy² + 3xy² - 3xy/4 - x²y=
3xy
² - xy² - x²y + 2xy - 3xy/4 =
2xy² - x²y + 8xy/4 - 3xy/4 =
2xy² - x²y + 5xy/4
4 votes
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sophia282
Junta tds q sao iguais : xy cm xy , numeros cm numeros...
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Verified answer
a)-9xy + 12x - 5y + 2 - 10x + 4xy - 7 + y =
-5xy + 2x - 4y - 5
b) 2/5 a³b - 3/4 a³b + 1/2 - 2a³b + 5 =
(2*4)/20 a³b - (3*5)/20 a³b - (2*20)/20 a³b + 5/10 + 50/10 =
8/20 a³b - 15/20 a³b - 40/20 a³b + 55/10 =
-47/20 a³b + 55/10
c)
-3t² + 5v - 5v + t²/2 + 4 =
-6t²/2 + t²/2 + 4 =
-5t²/2 + 4
d)
1,5a²b³ + 4,5a³b² - a²b³ - 3,2a³b² + 6,4a²b³ - a³b² =
6,9a²b³ + 0,3a³b²
e)
a - 4 + b - 2 + a² + 3 - 4a² + 7a - 3b + 0,8 =
-3a² + 8a - 2b - 2,2
f)
-ab²/2 + a⁴ + 3ab²/5 - 0,3 + 3a⁴/2 - 1,5 =
2a⁴/2 + 3a⁴/2 - 5ab²/10 + 6ab²/10 - 1,8 =
5a⁴/2 + ab²/10 - 1,8
g)
2xy - xy² + 3xy² - 3xy/4 - x²y=
3xy² - xy² - x²y + 2xy - 3xy/4 =
2xy² - x²y + 8xy/4 - 3xy/4 =
2xy² - x²y + 5xy/4