SOLUTION: Caso de trinomio de la forma x2 + bx + c. Factorizar: a. x^4+4x^2-21

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Question 782032: Caso de trinomio de la forma x2 + bx + c. Factorizar:
a. x^4+4x^2-21
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
Answer: (x^2-3)(x^2+7)
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