Question 727029
{{{sqrt(4t+s)/(v-200)=q}}}
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{{{sqrt(4t+s) = q*(v-200)}}}
Square both sides
{{{4t+s = q^2*(v-200)^2}}}
{{{4t = q^2*(v-200)^2 - s}}}
{{{t = (q^2*(v-200)^2 - s)/4}}}