To solve the equation x^2 + 7x - 80, you would get x = 6.105 and x = -13.105, I believe.
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We will be able to identify the answer if we have the equation. We can only check on the coordinates from the given vertex.
Go study
which pairs of angles in the figure below are vertical angles
Use the below link at IRS.gov for some information
That depends on the equation.
0.5714
ISN and TSW TSN and ISW
5.(8+3)
2
That depends on what the equation is.