Question 966767
{{{(1/2)BH=5}}}
{{{BH=10}}}
{{{(x+3)x=10}}}
{{{x^2+3x-10=0}}}
{{{(x+5)(x-2)=0}}}
Only the positive solution makes sense here,
{{{x-2=0}}}
{{{x=2}}}
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{{{x+3=highlight(5)}}}{{{cm}}}