SOLUTION: Use the method of completing the square to find the standard form of the quadratic function. State the vertex and exis of symmetry of the graph of the function. f(x)=x^2+8x+9

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: Use the method of completing the square to find the standard form of the quadratic function. State the vertex and exis of symmetry of the graph of the function. f(x)=x^2+8x+9       Log On


   

Question 323297: Use the method of completing the square to find the standard form of the quadratic function. State the vertex and exis of symmetry of the graph of the function.
f(x)=x^2+8x+9
help please
cz
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use the method of completing the square to find the standard form of the quadratic function. State the vertex and exis of symmetry of the graph of the function.
f(x)=x^2+8x+9
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y = x^2+8x+(16) + 9-16
y = (x+4)^2-7
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Vertex: (-4,-7)
Axis: x = -4
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Cheers,
Stan H.