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isabellemayra13
@isabellemayra13
October 2020
2
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calcule as somas abaixo :
A - (2x+y+3) + (5x+y+
1)
B - (3ab - 6ab²) + ( a² + 4ab + 2b² ) + (5a² - 3b² )
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3478elc
Verified answer
A - (2x+y+3) + (5x+y+
1)
7x + 2y + 4
B - (3ab - 6ab²) + ( a² + 4ab + 2b² ) + (5a² - 3b² )
7ab -6ab^2 +6a^2 - b^2
1 votes
Thanks 3
eluciamonteiro
Verified answer
A - (2x+y+3) + (5x+y+
1)
2x+y+3 + 5x+y+1
2x + 5x + y + y + 3 + 1
7x + 2y + 4
B - (3ab - 6ab²) + ( a² + 4ab + 2b² ) + (5a² - 3b² )
3ab - 6ab² + a² + 4ab + 2b² + 5a² - 3b²
3ab + 4ab - 6ab² + a² + 5a² + 2b² - 3b²
7ab - 6ab² + 6a² - b²
ab(7 - 6b) + 6.(a + b).(a -b)
7 votes
Thanks 8
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Lista de comentários
Verified answer
A - (2x+y+3) + (5x+y+1)
7x + 2y + 4
B - (3ab - 6ab²) + ( a² + 4ab + 2b² ) + (5a² - 3b² )
7ab -6ab^2 +6a^2 - b^2
Verified answer
A - (2x+y+3) + (5x+y+1)
2x+y+3 + 5x+y+1
2x + 5x + y + y + 3 + 1
7x + 2y + 4
B - (3ab - 6ab²) + ( a² + 4ab + 2b² ) + (5a² - 3b² )
3ab - 6ab² + a² + 4ab + 2b² + 5a² - 3b²
3ab + 4ab - 6ab² + a² + 5a² + 2b² - 3b²
7ab - 6ab² + 6a² - b²
ab(7 - 6b) + 6.(a + b).(a -b)