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Find the equation of the axis of symmetry of the graph of y = (x + 3)^2 - 5 + (x + 7)^2 - 15.

 Jul 26, 2021
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Expand and simplify to get

2x^2 + 20x+38 = f(x)

roots ....via quadratic formula are   -5 +-sqrt6         axis if symmetry is x =  -5

 Jul 26, 2021

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