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Aplicas.
(a + b)² =
a² + 2ab + b²
(3x + 8)² =
(3x)² + 2(3x)(8) + 8²
3²x² + 48x + 64 =
9x² + 48x + 64
Aplicas.
(a - b)² =
a² - 2ab + b²
(x - 5y)² =
x² + 2(x)(5y) + (5y)² =
x² - 10xy + 5²y² =
x² - 10xy + 25y²