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Sagot :
Answer:
What you found were the x-intercepts of the quadratic function. Here's how you would write it- (2,0), (-9,0).
I think finding the zeroes of a function is equal to finding the x-intercepts, so I believe the two terms can be used interchangeably.
Hope I helped, have a nice day, also please correct me if I did anything wrong
Answer:
-9, 2
Step-by-step explanation:
f(x) = x^2 +7x -18
Set the function equal to zero
0 = x^2 +7x -18
Factor. What two numbers multiply to -18 and add to 7
9*-2 = -18
9+-2 = -7
0 = (x=9) (x-2)
Using the zero product property
x+9=0 x-2 =0
x=-9 x=2
You can also write in coordinate pairs
(-9,0) and (2,0)
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