Solve the following equations by using quadratic formula and give your answer correct to 2 decimal places : (i) 4x 2 - 5x - 3 = 0 (ii)

(i) The given equation is 4x 2 - 5x - 3 = 0 Comparing it with ax 2 + bx + c = 0, we get a = 4 , b = -5 , c = -3 By using formula, we obtain: Hence roots of the given equations are 1.69, -0.44. (ii) Given, Comparing it with ax 2 + bx + c = 0, we get a = 2 , b = -7 , c = -1 By using formula, we obtain: Hence roots of the given equations are 3.64, -0.14.