maths help once again?

Question

given that the quadratic equation
(k+2)x^3 + 4x + k + 5 = 0
has equal real roots
(i) show that k^2 +7k + 6 = 0 (3 marks)
(ii) find the values of k satisfying this equation and solve the original quadratic for these values of k (4 marks)

yup sorry i do mean (k+2)x^2... sorry everyone that first equation should read (k+2)^2 + 4x + k + 5 = 0

Answer 1

Do you mean (k+2)x^2 instead of (k+2)x^3 ??