Use the quadratic formula to find the solutions to the equation x^2-3x+1=0

Which of the following expressions are equivalent ?

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

See attachment below and find the equivalent of tan(∠qsr)