SOLUTION: Find the x-intercepts. Express your answer as an ordered pair. y = x^2 – 7x – 10

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Question 89494: Find the x-intercepts. Express your answer as an ordered pair.
y = x^2 – 7x – 10
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
setting y=0 we get:
x^2-7x-10=0 now using the quadratic equation x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ we get:
x=(7+-sqrt[-7^2-4*1*-10])/2*1
x=(7+-sqrt49+40])/2
x=(7+-sqrt89)/2
x=(7+-9.4)/2
x=(7+9.4)/2
x=16.4/2
x=8.2 answer. or the point (8.2,0)
x=(7-9.4)/2
x=-2.4/2
x=-1.2 answer. or the point (-1.2,0)