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Can someone show you the steps in finding the real roots of 2x3-42x plus 40?
Wiki User
∙ 9y ago
Factor out a 2.
2(x3 - 21x + 20)
That factors to 2(x - 1)(x - 4)(x + 5)
The roots are -5, 1 and 4
Wiki User
∙ 9y ago
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