Question 874572
{{{ x^2-2x-3= sqrt( 4 ) }}}
{{{ x^2-2x-3= 2}}}
{{{ x^2-2x-5= 0}}}
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*[invoke solve_quadratic_equation 1,-2,-5]
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{{{ x^2-2x-3= -2}}}
{{{ x^2-2x-1 = 0}}}
*[invoke solve_quadratic_equation 1,-2,-1]
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Check all the solutions, make sure they're not extraneous.