Can someone help me out with this question??? ​

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

What are the sotions to the quadratic equation 9x^2=4

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).