SOLUTION: What are the x-intercepts of the graph of y=-xsquared-6x+40

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Question 79419This question is from textbook algebra 1
: What are the x-intercepts of the graph of y=-xsquared-6x+40This question is from textbook algebra 1

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
Y=-X^2-6X+40
solving algebraically we get
(x+10)(x-4) or
x+10=0
x=-10 answer
x-4=0
x=4 answer
or solving graphically we get:
+graph%28+300%2C+300%2C+-12%2C+10%2C+-12%2C+60%2C+y+=+-x%5E2+-6x+%2B40+%29+ (graph 300x300 pixels, x from -12 to 10, y from -12 to 60, y = -x^2 -6x +40).