Question 681659
P(x) = {{{4x^3+4x^2-x-1}}}
Associative property of grouping
0= {{{(4x^3+4x^2)-(x+1)}}}
0= {{{4x^2(x+1)-(x+1)}}}
0= {{{(4x^2-1)(x+1)}}}
{{{highlight_green(0=(2x+1)(2x-1)(x+1)))}}} ==> factored
...
zeros at {{{1/2}}}, {{{-1/2}}} and -1

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