Mathematics, 08.12.2019 09:31 sam1625
Find the nth degree polynomial function with real coefficients satisfying the given conditions.
n=4
-1,3 and 2+4i are zeros
f(1)=-68
can someone show steps to solve this?
this is what i have so far
(x+1)(x-3)(x-2-4i)(x-2+4i)
Answers: 3
![\bf (x+1)(x-3)(x-2-4i)(x-2+4i) \\\\ \textit{now, let's take a peek at }(x-2-4i)(x-2+4i)\\ \textit{and recall our }\textit{difference of squares} \\ \quad \\ (a-b)(a+b) = a^2-b^2\qquad \qquad a^2-b^2 = (a-b)(a+b)\\\\ -----------------------------\\\\ (x-2-4i)(x-2+4i)\implies [(x-2)-(4i)][(x-2)+(4i)] \\\\\ [(x-2)^2-(4i)^2]\implies [(x^2-2x+4)-(4^2\boxed{i^2})] \\\\\ [(x^2-2x+4)-(16\cdot \boxed{-1})]\implies [(x^2-2x+4)+16] \\\\ (x^2-2x+20)\\\\ -----------------------------](/tpl/images/0408/8130/63139.png)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 16:00, mncampbell01
Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m
Answers: 1
You know the right answer?
Find the nth degree polynomial function with real coefficients satisfying the given conditions.
Questions in other subjects:
Computers and Technology, 03.01.2020 13:31
