Question 332115
Starting with:
{{{ x^8 + x^4 + x^4 + 1 }}}
.
Group terms:
{{{ (x^8 + x^4) + (x^4 + 1) }}}
Factoring the left term:
{{{ x^4(x^4 + 1) + (x^4 + 1) }}}
Factoring out the "common term":
{{{ (x^4 + 1)(x^4 + 1) }}}
{{{ (x^4 + 1)^2 }}}