<Dd> x = c (\ displaystyle x = (\ sqrt (c))) </Dd> <P> and there is only one root since </P> <Dl> <Dd> − c = − c + 2 c = c . (\ displaystyle - (\ sqrt (c)) = - (\ sqrt (c)) + 2 (\ sqrt (c)) = (\ sqrt (c)).) </Dd> </Dl> <Dd> − c = − c + 2 c = c . (\ displaystyle - (\ sqrt (c)) = - (\ sqrt (c)) + 2 (\ sqrt (c)) = (\ sqrt (c)).) </Dd>

What are the solutions to the quadratic equation