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Algebra 2 · F-IF

Key Features of Polynomial Functions

Zeros of a polynomial are x-intercepts; their multiplicity controls whether the graph crosses or touches the axis. The leading term determines end behavior.

Algebra 2Common Core HSF-IF.B.4F-IFVerified correct ✓

Worked examples

Given f(x) = -2(x + 2)(x − 2), find the y-intercept (value of f(0)).
Answer: 8
Given f(x) = -2x(x + 4), find one zero (x-intercept) of f.
Answer: -4

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