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2x⁴ - x³ - 6x² = x² (2x² - x - 6)
¡Para factorizar lo de adentro de los paréntesis usare la formula general!
2x² - x - 6 = 0 → a = 2, b = -1, c = -6
Formula General:
x = [(- b ± √(b² - 4ac)] / 2a
Reemplazando:
x = [(- (- 1) - ± √((- 1²) - 4(2)(- 6))] / 2(2)
Valores de "x":
Para +√... x = 2 → x - 2 = 0
Para -√... x = - 3/2 → 2x + 3 = 0
2x⁴ - x³ - 6x² = x² [ (x - 2) (2x + 3) ]
2da:
y^6 - y² = (y³)² - y² = (y³ + y) (y³ - y)
3era:
x³ + 16x = x(x² - 4²) = x [ (x + 4) (x - 4) ]
Espero haberte ayudado, saludos!