Pre-Calculus

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I need help with simplifying (fog)(x) where f(x)= x^2+3x-1
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I need the answer to questions you have previous answered. 1.
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I saw you did this about a year ago. Can you help me
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For the function below find the vertex axis of symmetry maximum
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Need answer:1. Which of these is the equation of a parabola
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1. Verify that the functions f and g are inverse of each other
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