To factor x6 + 22x3 + 121 ,
use the formula a2 + 2ab + b2 = (a + b)2,
noting that here, the acting variable is " x3 " rather than "x". Thus,
"a" is " x3 " and "b" is "11", to get:
x6 + 22x3 + 121 = (x3 + 11)2.
No more factoring is possible.
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