how to solve quadratic equation

Question

Would you help me solve this quadratic equation

 

 

                       ___________________

          -9.7  - √ 9.7^2 + 4(24.61)(16)

 

 

 

thanks

Answer 1

See the previous question's solution.

Use the form of the quadratdic equation and it's solution equation for s to find a, b, c.

Answer 2

-9.7 - [(9.7)² + 4(24.61)(16)]^{1/2 =} = -9.7 - (1669.13)^1/2 = -9.7 - 40.9 = -50.6