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Q21: <span class="ql-formula" data-value="x + 3 = (
Q78: <span class="ql-formula" data-value="\frac { 1 } {
Q100: <span class="ql-formula" data-value="\frac { x ^ {
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Q149: Let <span class="ql-formula" data-value="\mathrm {
Q199: <span class="ql-formula" data-value="7 + 4 ^ {
Q219: <span class="ql-formula" data-value="36 x ^ { 4
Q301: <span class="ql-formula" data-value="\frac { ( x -
Q399: <span class="ql-formula" data-value="5 , - 8"><span class="katex"><span
Q542: <span class="ql-formula" data-value="\frac { x } {