formula : (x + a) (x + b) = x² + (a + b) x + ab
ejercicio : (x + 2) (x - 5) =
ejercicio : (x + 2) (x - 5) =
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(x+2)(x-5)
Respuesta = x²-3x-10
Respuesta:
(x + 2) (x - 5) = x² + ( 2 - 5 )x + (2)(-5)
(x + 2) (x - 5) = x² - 3x - 10
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