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Andrey0015
@Andrey0015
December 2019
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Simplifique as expressões abaixo:A:a.(a²-ab+6²)+6.(a²-ab+6²), B:(3x)²+(10+3x).(10-3x) e C:(x+3).(x+4)-2.(x+1).Por favor!
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Verified answer
a)
a.(a²-ab +6²) + 6.(a² - ab +6²) ou
(a+6).(a²-ab+6²)
a³ - a²b + 6²a + 6a² - 6ab + 6³
a³ - a²b + 6a² + 36a - 6ab + 6³
===========================================
b)
(3x)² + (10+3x).(10-3x)
9x² + 10² - (3x)²
9x² + 100 - 9x²
= 100
================================
c)
(x+3).(x+4)-2.(x+1)
(x² + 4x + 3x + 12) - 2x - 2
x² + 7x + 12 - 2x - 2
x² + 5x + 10
ok
1 votes
Thanks 0
Andrey0015
Muito obrigado!
guilhermecolem
A*(a²-ab+b²)+b*(a²-ab+b²)
a³-a²b+ab²+a²b-ab²+b³
a³+b³
0 votes
Thanks 0
Andrey0015
Obrigado!
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Verified answer
a)a.(a²-ab +6²) + 6.(a² - ab +6²) ou (a+6).(a²-ab+6²)
a³ - a²b + 6²a + 6a² - 6ab + 6³
a³ - a²b + 6a² + 36a - 6ab + 6³
===========================================
b)
(3x)² + (10+3x).(10-3x)
9x² + 10² - (3x)²
9x² + 100 - 9x² = 100
================================
c)
(x+3).(x+4)-2.(x+1)
(x² + 4x + 3x + 12) - 2x - 2
x² + 7x + 12 - 2x - 2
x² + 5x + 10 ok
a³-a²b+ab²+a²b-ab²+b³
a³+b³