i don't know how to solve this problem i think i can dl the firts part but the 2nd one i don't know what x means the question sa
id" evaluate the expressions below for the given values" "-2x2+1 for x=-3" the firts part gives me 9 bit idk what to do with the "for x=-3"
1 answer:
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The correct answer is: if is a root of
, then
is also a root of
.
In fact, every polynomial has real and/or complex solutions. If all solutions are real, we're good. But if not all of them are real, then the complex ones come in couple of conjugate solutions. Since and
are conjugate complex numbers, if one of them is a solution, the other must be as well.