3 1/3 - 1 2/3= ? In a fraction

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

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).