Find the number of positive roots and the number of negative roots of the equation x^3-3x-1=0.

Not sure if you consider this problem pre-calc. What method do you use to find the answers? For positive roots, do they mean roots to the right of 0 on the x-axis?
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2 Answers

x^3 -3x-1... me get 1 anser...x=-0.347297 bi iterate... divide...(x^3 -3x-1) / (x+0.0347297) giv x^2 +0.347297x -1.95811... put that intu quadratik equashun & it giv roots=1.2364096 & -1.5837066...
by
but tri iterate agin, get 1 anser=1.879385... go figger
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