AIR MATH

Math Question

Factor \( x^{3}-4 x^{2}+7 x-28 \) by grouping. What is the resulting expression? \( \left(x^{2}-4\right)(x+7) \) \( \left(x^{2}+4\right)(x-7) \) \( \left(x^{2}-7\right)(x+4) \) \( \left(x^{2}+7\right)(x-4) \)

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