AIR MATH

Math Question

Which shows one way to determine the factors of \( x^{3}+4 x^{2}+5 x+20 \) by grouping? \( x\left(x^{2}+4\right)+5\left(x^{2}+4\right) \) \( x^{2}(x+4)+5(x+4) \) \( x^{2}(x+5)+4(x+5) \) \( x\left(x^{2}+5\right)+4 x\left(x^{2}+5\right) \)

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