If f(x) = 2x3 + 4x2 - 6x + 40 and f(-4) = 0, then find all of the zeros of
f(x) algebraically.

The linear equation is: y=ax+b

Answers4.) -1/205.) -1/406.) -55/127.) -3/4

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.