Solve the following equations by using formula: 25x 2 + 30x + 7 = 0

The given equation is 25x 2 + 30x + 7 = 0. Comparing it with ax 2 + bx + c = 0, we get a = 25 , b = 30 , c = 7 By using formula, we obtain: Hence roots of the given equation are .