Find the magnitude of −3i .
1 answer:
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Answer: Option C
Step-by-step explanation:
The graph is of the quadratic equation is a parabola.
The parabola intercepts the x-axis when .
Then, you need to substitute into the equation:
Factor the quadratic equation: find two number that when you add them you get 2 that when you multiply them you get -8. In this case these numbers are -2 and 4. Then:
Therefore, the x-intercepts are:
(-4,0) and (2,0)