## anonymous one year ago please help I will fan and medal A quadratic equation is shown below: 9x2 − 16x + 60 = 0 Part A: Describe the solution(s) to the equation by just determining the radicand. Show your work. Part B: Solve 4x2 + 8x − 5 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used.

1. DanJS

the radicand is the part underneath the root in the quadratic formula

2. DanJS

b^2 - 4 a*c

3. anonymous

okay so how would I answer part a

4. DanJS

the equation given has the standard form ax^2 + bx + c = 0, what is the radicand?

5. anonymous

would it be b

6. DanJS

The quadratic formula is $x = \frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }$ the radicand under the root tells you if you have real or complex solutions depending if it is positive or negative value

7. DanJS

b^2 - 4*a*c = (-16)^2 - 4 * 9 * 60 = -1904

8. DanJS

a negative under a square root has imaginary solutions

9. anonymous

okay the as part says to Describe the solution(s) to the equation by just determining the radicand. the solutions are imaginary but how would I show my work?

10. anonymous

@DanJS

11. DanJS

Show the calculation i did above, turns out negative

12. DanJS

For B) not sure what appropriate method means, if it works , that is good, you may be able to factor it, but you can always apply that quadratic formula