What type of roots dies the equation 5x^2-3x+1=0 have?

In the surface area formula for cylinders which expressionrepresents the lateral area

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.