Question 46982
Solve the equation for the indicated variable. (Leave ± in your answer, when appropriate.)
rm=t^2-mt for t
T^2-MT-RM=0.......COMPRING WITH STD.EQN....AX^2+BX+C=0....A=1...B=-M....C=-RM
{{{T = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{T = (-(-M) +- sqrt( (-M)^2-4*1*(-R*M) ))/(2*(-R*M)) }}} 
{{{T = (M +- sqrt( M^2+4*R*M ))/(-2*R*M) }}}