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Q5: <span class="ql-formula" data-value="\frac { 2 } {
Q7: <span class="ql-formula" data-value="\mathrm { r } =
Q12: <span class="ql-formula" data-value="\begin{aligned}4 x - y +
Q51: Adjust the contrast by changing the
Q53: Let <span class="ql-formula" data-value="\mathrm {
Q150: <span class="ql-formula" data-value="( x - 3 )
Q176: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7044/.jpg" alt=" A)
Q215: <span class="ql-formula" data-value="r = \frac { 4
Q224: <span class="ql-formula" data-value="( x + 4 )
Q341: <span class="ql-formula" data-value="\frac { 5 x ^