Solve the Equation for the Indicated Variable $\mathrm { rm } = \mathrm { t } ^ { 2 } - \mathrm { mt }$

Solve the equation for the indicated variable. Assume no denominator is 0.
- $\mathrm { rm } = \mathrm { t } ^ { 2 } - \mathrm { mt }$ , for $\mathrm { t }$

A) $t = \frac { m \pm \sqrt { m ^ { 2 } + 4 m r } } { 2 m }$

B) $t = \frac { m \pm \sqrt { m ^ { 2 } - 4 m r } } { 4 }$

C) $t = \frac { m \pm \sqrt { m ^ { 2 } + 4 r m } } { 2 }$

D) $t = \sqrt { m r - m }$

Correct Answer:

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