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Find the zeros by factoring
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Learn it The zeros (x-intercepts) are where y = 0. Factor, then set each factor equal to 0.
Example: Zeros of $y = x^2 - 2x - 8$.
- Factor: $(x - 4)(x + 2) = 0$.
- $x - 4 = 0$ or $x + 2 = 0$.
- $x = 4$ or $x = -2$.
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