Question 911795
<pre>
I'll do just the longest one.  You do the others the same way:

{{{1/2}}},{{{1/3}}},{{{-1}}},{{{1}}}

Set x equal to each:

{{{x=1/2}}},{{{x=1/3}}},{{{x=-1}}},{{{x=1}}}

Get 0 on the right of each by subtracting the number on
the right of each from both sides of each

{{{x-1/2=0}}},{{{x-1/3=0}}},{{{x+1=0}}},{{{x-1=0}}}

Clear the equations of fractions that have fractions:

{{{2x-1=0}}},{{{3x-1=0}}},{{{x+1=0}}},{{{x-1=0}}}

Put all those left sides in parentheses:

{{{(2x-1)=0}}},{{{(3x-1)=0}}},{{{(x+1)=0}}},{{{(x-1)=0}}}

Multiply equals by equals 4 times:

{{{(2x-1)(3x-1)(x+1)(x-1)=0}}}

FOIL the first two and then FOIL the last two:

{{{(6x^2-5x+1)(x^2-1)=0}}}

Multiply every term in the first parentheses by every term in
the second parentheses:

{{{6x^4-6x^2-5x^3+5x+x^2-1=0}}}

Collect like terms

{{{6x^4-5x^3-5x^2+5x-1=0}}}

Do the others the exact same way.

Edwin</pre>