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Q27: <span class="ql-formula" data-value="\frac { 4 } {
Q62: <span class="ql-formula" data-value="( 8 , - 2
Q87: <span class="ql-formula" data-value="( \sqrt { x }
Q122: <span class="ql-formula" data-value="\frac { \sqrt { 50
Q128: <span class="ql-formula" data-value="\frac { x } {
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Q214: <span class="ql-formula" data-value="( x - 9 )
Q240: <span class="ql-formula" data-value="2 \sqrt { 7 }
Q243: <span class="ql-formula" data-value="\frac { 1 } {
Q338: <span class="ql-formula" data-value="( 2,3 )"><span class="katex"><span class="katex-mathml"><math