x(x + 1) (x + 2)(x+3) = x(x + 1)
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Step-by-step explanation:
[x^2+x][x^2+5x+6] = x^2+x
x^4+5x^3+6x^2+6x=x^2+x
x^4+5x^3+5x^2+5x=0
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