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Decide what values of the variable cannot possibly be solutions for the equation.
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Q76: A railroad tunnel is shaped like
Q79: <span class="ql-formula" data-value="( 6 - 9 i
Q80: <span class="ql-formula" data-value="\frac { 7 + 3
Q100: <span class="ql-formula" data-value="\frac { 6 - \sqrt
Q288: <span class="ql-formula" data-value="x ^ { 2 }
Q313: <span class="ql-formula" data-value="\mathrm { Ve } =
Q385: <span class="ql-formula" data-value="B = \left\{ 15 ,
Q461: <span class="ql-formula" data-value="\mathrm { I } ="><span
Q477: <span class="ql-formula" data-value="4 \sqrt { x }
Q486: Let <span class="ql-formula" data-value="\mathrm {