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A quadratic equation is shown below:

9x2 - 16x + 60 = 0

Part A: Describe the solution(s) to the equation by just determining the discriminant. 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.

Part C: Solve 2x2 -12x + 5 = 0 by using a method different from the one you used in Part B. Show the steps of your work.

Respuesta :

Simplify your answer:

18x - 16x + 60= 0

2x + 60 = 0

2x= -60

x=-30

B) Simplify to solve the problem, it is the simplest way to find the answer:
8x+8x-5=0
16x-5=0
16x=-5
x=-3.2  (Ok this one is probably wrong, but y'a know...)

C) 4x- 12x+5=0
-8x=-5
8x=5
x=1.6    (Ok seriously how'd I mess up)

Question: When you say 2x2 do you mean 2 times 2 or 2x times 2?

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