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Solve f(x)=(x − 3)(x − 1)(x + 1) = 0 by using intersection with the coordinate axes.

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samihaalhabsi | Student, Undergraduate | eNoter

Posted November 21, 2011 at 12:17 AM via web

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Solve f(x)=(x − 3)(x − 1)(x + 1) = 0 by using intersection with the coordinate axes.

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted November 21, 2011 at 12:39 AM (Answer #1)

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The solution of f(x) = (x - 3)(x - 1)(x + 1) = 0 is all the points that lie on the x-axis and have a y-coordinate equal to 0.

(x - 3)(x - 1)(x + 1) = 0

when (x - 3) = 0 or (x - 1) = or (x + 1) = 0

=> x = 3 or x = 1 or x = -1

The solution of the equation (x - 3)(x - 1)(x + 1) = 0 is {-1, 1, 3}

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