Fill in the blank with one of the words or phrases listed below. 
-The of a list of rational expressions is a polynomial of least degree whose factors include the factors of all denominators in the list.
Definitions:
Q40: <span class="ql-formula" data-value="\frac { x ^ {
Q45: <span class="ql-formula" data-value="x ^ { 4 }
Q71: <span class="ql-formula" data-value="\sqrt [ 3 ] {
Q103: <span class="ql-formula" data-value="3 b c - 15
Q128: <span class="ql-formula" data-value="x ^ { 2 }
Q205: <span class="ql-formula" data-value="\frac { \mathrm { P
Q221: <span class="ql-formula" data-value="( 4 \sqrt { 2
Q274: <span class="ql-formula" data-value="\frac { x ^ {
Q329: <span class="ql-formula" data-value="\left( 10 x ^ {
Q369: <span class="ql-formula" data-value="( 9 x - y