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Q47: <span class="ql-formula" data-value="\left\{ \begin{aligned}y & = 4
Q50: <span class="ql-formula" data-value="( x - 9 )
Q61: <span class="ql-formula" data-value="\left( x ^ { 2
Q148: Two bicyclists, one averaging <span
Q170: <span class="ql-formula" data-value="\frac { 2 + 2
Q190: <span class="ql-formula" data-value="\frac { x } {
Q226: <span class="ql-formula" data-value="\frac { \frac { 2
Q270: <span class="ql-formula" data-value="\frac { \frac { 14
Q381: <span class="ql-formula" data-value="16 x ^ { 2
Q390: <span class="ql-formula" data-value="11 x ^ { 2