SOLUTION: Find the x-intercepts. y = x^2 � 7x � 2 What is the process to solve this problem? Any assistance is appreciated.

Question 89760: Find the x-intercepts.
y = x^2 � 7x � 2
What is the process to solve this problem? Any assistance is appreciated.

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
y = x^2 � 7x � 2
:
The x intercepts occur when y = 0, therefore:
x^2 - 7x - 2 = 0
:
To the value of x, in this equation we have to us the quadratic formula:
:
In this equation a=1; b=-7; c=-2

:
; a minus a minus is a plus
:
;
:
;
:
Solution 1:
;
;
x = +7.275
:
Solution 2:
;
;
x = -.275
:
:
Check both solutions in the original equation

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