$\displaystyle x^5+x^3+x$ I am not sure how to factorise the above equation as its constant term is 0 .
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Originally Posted by mathaddict $\displaystyle x^5+x^3+x$ I am not sure how to factorise the above equation as its constant term is 0 . $\displaystyle =x(x^4+x^2+1)$ Now its constant term is 1 $\displaystyle x^4+x^2+1=x^4+2x^2+1-x^2=(x^2+1)^2-x^2$ can you finish it ?
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