19-09-2018
Mathematics

contestada

What are the zeros of the quadratic function? f(x)=3x2−3x−18

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jimrgrant1 jimrgrant1

19-09-2018

x = - 2 and x = 3

to find the zeros set f(x) = 0

3x² - 3x - 18 = 0

divide through by 3

x² -x - 6 = 0

(x - 3)(x + 2) = 0 ⇒ x = - 2 and x = 3 are the zeros

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