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Aplicas.
(a + b)² =
a² + 2ab + b²
(x + 3)² =
x² + 2(x)(3) + 3² =
x² + 6x + 9
Aplicas.
(a- b)² = a² - 2ab + b²
(2x - 8)² =
(2x)² - 2(2x)(8) + 8² =
2²x² - 32x + 64 =
4x² - 32x + 65