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andrew-mc [135]

3 years ago

7

State how many imaginary and real zeros the function has.

1 answer:

myrzilka [38]3 years ago

7 0

Hello,
Degre 5==> even number of imaginary roots and odd number of reals.

Real roots must be a divisor of 7.
Using Excel, we find

<span> <span><span> x P(x)
</span><span>-7 0 </span>
<span> -6 1369
</span> <span> -5 1352
</span> <span> -4 867
</span> <span> -3 400
</span> <span> -2 125
</span> <span> -1 24
</span><span>0 7
</span><span>1 32
</span><span>2 225
</span><span>3 1000
</span><span>4 3179
</span><span>5 8112
</span><span>6 17797
</span><span>7 35000

So: one real root: 7 and 4 imaginary roots.

Answer B
</span></span></span>

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2 years ago

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