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3 - 10x + 4x^2 = 5x - 30
4x^2 -10x - 5x + 30 + 3 = 0
4x^2 - 15x + 33 = 0
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a b. c
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a = 44
b = -15
c = 33
ecuación general :
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x = (b (+/-) raiz 2 ( b2 - 4ac)) / 2a.
x = (-15 (+/-) raiz 2 ( 225 - 5.808)) / 88
x = -15 (+/-) raiz 2 ( - 5.583)) / 88
x1 = -15 + ( 2.791,5 i)) / 88
x2 = -15 - ( 2.791,5i)) / 88
Así quedaria por raiz 2 si el valor es negativo es imaginario use abreviada ( i )