# Secant lines & average rate of change with arbitrary points (with simplification)

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### Problem

f, left parenthesis, x, right parenthesis, equals, x, start superscript, 2, end superscript, minus, 2, x, plus, 5
What is the average rate of change of f over the interval minus, 1, is less than or equal to, x, is less than or equal to, t, in terms of t, where t, does not equal, minus, 1?