To solve the equation x^2 - 4x - 5 = 0, we can use the quadratic formula:
x = (-(-4) ± √((-4)^2 - 4(1)(-5)))/(2(1))
x = (4 ± √(16 + 20))/2
x = (4 ± √36)/2
x = (4 ± 6)/2
So, the solutions are:
x = (4 + 6)/2 = 10/2 = 5
x = (4 - 6)/2 = -2/2 = -1
Therefore, the solutions to the equation x^2 - 4x - 5 = 0 are x = 5 and x = -1.
To see the graph of the function y = x^2 - 4x - 5, you can plug the equation into a graphing calculator or use online graphing tools to plot the function.
Solve x^2
- 4x - 5 = 0 and enter solutions below.
2) Push the "Graph It" Button to see a graph of
4=x^2-4x-5
1 answer
1 answer