AIR MATH

Math Question

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\( 1 \quad 2 \quad 3 \quad 4 \quad 5 \quad 6 \quad 7 \quad 8 \)
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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