michaelearth wrote:1. What are the answers to the following equation when trying to complete the square:
To learn how to solve quadratics by completing the square, try here
. Note that you can check your answers by using the more-reliable Quadratic Formula
michaelearth wrote:2. Determine the number of solutions in this equation: -4x^2-3x+7=0
Since this asks you only for the number
of solutions, not for the actual values of the solutions, you need to use the discriminant (the stuff inside the square root in the Quadratic Formula
) to determine this. I don't know if you've studied complex numbers
yet. If not, you'll only need to use what you've learned about positive and zero values. In either case, the three possible outcomes are listed and explained here
michaelearth wrote:3. Graph: y=x^2-4x+13
To learn how to graph quadratics, try here
michaelearth wrote:a. What is the Discrinate?
b. How many solutions?
c. What type of solutions does this equation have?
When the assignment misspells the word, it's no surprise when the students get stuck!
As displayed above, the intended term is of course "discriminant". So do the same for these parts as you did for part (2) above.