Question

. If roots of th equation
(3/4)x² +9x+c³ =0
  then the value of c....​

Answer 1

Step-by-step explanation:

using b^2-4ac =0

9^2 - 4 ×3/4 ×c^3 =0

81 - 3c^3 =0

81 = 3c^3

27 = c^3

3^3= c^3

c=3