1) Solving `x^{2}-4x-5=0` using the quadratic formula we get:
x = (4 ± √(4^2 - 4(1)(-5))) / 2(1)
x = (4 ± √(16 + 20)) / 2
x = (4 ± √36) / 2
x = (4 ± 6) / 2
Therefore, the solutions are:
x = (4 + 6) / 2 = 10 / 2 = 5
x = (4 - 6) / 2 = -2 / 2 = -1
2) (The visual representation of the function will appear as a graph.)
1) Solve `x^{2}-4x-5=0` and enter solutions below.
2) Push the "Graph It" Button to see a graph of `y=x^{2}-4x-5`
1 answer