princess3792 princess3792

01-06-2020
Mathematics

contestada

6x2 - 21 = 33; Solve and what are the x-intercepts of this quadratic equation ?

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lekalekaleka lekalekaleka

01-06-2020

Solving by factoring.
6x^2 - 21 - 33 = 0
6x^2 - 55 = 0
x^2 - 9 = 0
(x-3)(x+3) = 0
x - 3 = 0
x + 3 = 0
x1 = -3
x2 = 3

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