Answer:
(-4,0) and (5,0)
Step-by-step explanation:
Factor.
f(x) = x^2 -x - 20
Factors of -20 that when are added they equal -1
-5 and 4
(x-5) (x+4)
x=5 and x=-4
The answer is Alex Rodriguez
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Answer:
a=3,b=5
Step-by-step explanation:

so as you got it:

I have drawn the graphs.you can get from them,maybe turn left 2
Answer:
First Step: separate x^2 from -16
Second Step: add -16/25 to the other side.
Step-by-step explanation:
x^2 - 16/25 = 0
^^ this might be easier if you separate x^2 and -16
<em>First Step-</em>
so rewrite the problem as x^2/25 -16/25 = 0
then...
<em>Second Step-</em>
add -16/25 to the other side. This makes it: x^2/25 = 16/25
<em>Continuation-</em>
Now, you can multiply 25 on both sides to cancel it out.
so you have x^2 = -16
Message me if you want to solve for x.