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Which shows one way to determine the factors of x3 + 4x2 + 5x + 20 by grouping?

Which shows one way to determine the factors of x3 + 4x2 + 5x + 20 by grouping?
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Which shows one way to determine the factors of x3 + 4x2 + 5x + 20 by grouping?

User Russbishop
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Hello,


x^3+4x^2+5x+20\\ =x^2(x+4)+5(x+4)\\ =(x+4)(x^2+5)
User Ishpeck
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