SOLUTION: How do I find out the graphing for -x^2+4x+5=0

Question 111946: How do I find out the graphing for -x^2+4x+5=0
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
TO GRAPH THIS EQUATION SET
Y=-X^2+4X+5
(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x^2 +4x +5).
set x=0 & solve for y
y=5 (0,5) answer.
set y=0 & solve for x
0=-x^2+4x+5
0=(-x+5)(x+1)
-x+5=0
-x=-5
x=5 (5,0) answer.
x+1=0
x=-1 (-1,0) answer.

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