SOLUTION: Do you know what would be the x intercepts of {{{ x^2-40x-500 }}} I have tried solving it but the answers I have gotten are 42.14 and -2.14 as well as 44.27.

Question 718326: Do you know what would be the x intercepts of I have tried solving it but the answers I have gotten are 42.14 and -2.14 as well as 44.27.
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
The x-intercepts of are where the graph intersects the x-axis. Since all points on the x-axis have a y-coordinate of 0, x-intercepts are found by replacing the y with zero and solving for x:

This factors fairly easily:

From the Zero Product Property:
x-50 = 0 or x+10 = 0
Solving these we get:
x = 50 or x = -10
The x-intercepts of are (50, 0) and (-10, 0).

P.S. You get the same answers if you use the Quadratic Formula (or any other legitimate way) to solve ). I don't know how you came up with decimal answers. But if you used the Quadratic Formula, then you must have made a mistake somewhere (which is an argument for solving by factoring when possible). Here's the solution using the formula:

Simplifying...

which is short for:
or
Simplifying...
or
x = 50 or x = -10
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