Question

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.

Answer 1

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

Answer 2

b^2 - 4 a*c

Answer 3

okay so how would I answer part a

Answer 4

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

Answer 5

would it be b

Answer 6

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

Answer 7

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

Answer 8

a negative under a square root has imaginary solutions

Answer 9

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?

Answer 10

@DanJS

Answer 11

Show the calculation i did above, turns out negative

Answer 12

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