Question 1124421
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<pre>
x^3 - 5x^2 + 4x - 20 = (factorize; start grouping) = 


= (x^3 - 5x^2) + (4x - 20) = x^2*(x-5) + 4*(x-5) = (x^2 + 4)*(x-5).
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Solved.