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OpenStudy (anonymous):
-3x3-12x2+15x
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OpenStudy (anonymous):
Put 3x in factor: y = 3x(-x^2- 4x + 5) = 0 Solve the quadratic equation by the Shortcut (Tip 1), since a + b + c = 0. One real root is (1) and the other is c/a = -5). Factoring form: 3x(1 - x)(x - 5) = 0
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