dctjr
03.10.2019 •
Mathematics
Find all the roots of the equation x4 - 2x3 + 14x2 - 18x + 45 = 0 given that 1 + 2i is one of its roots.
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Ответ:
another three roots are 1-2i, 3i ,-3i
Step-by-step explanation:
has one root = 1+2i
then another root will be = 1-2i [ since complex roots always occurs in pair]
therefore together both roots makes function as
since this polynomial is formed by its roots so it must divide the parent polynomial therefore on dividing the parent polynomial by obtained polynomial, we get
therefore we have three other roots are
1-2i
-3i
3i
Ответ:
The area of the rectangle would be (11)(7) =77
The area of the square is (6)(6)=36
77+36=113
Hope this helped :)