If it has rational coefients and is a polygon
if a+bi is a root then a-bi is also a root
the roots are -4 and 2+i
so then 2-i must also be a root
if the rots of a poly are r1 and r2 then the factors are
f(x)=(x-r1)(x-r2)
roots are -4 and 2+i and 2-i
f(x)=(x-(-4))(x-(2+i))(x-(2-i))
f(x)=(x+4)(x-2-i)(x-2+i)
expand
f(x)=x³-11x+20
Answer:
False
Step-by-step explanation:
Since -40+11 does not equal -1, it is False.
So, your answer is "false"
Answer: 
Step-by-step explanation:
For this exercise it is necessary to remember the following:
1) The Distributive Property states the following:

2) The multiplication of signs:

Knowing this, and having the following expression given in the exercise:

You can apply the Distributive property multiplying
and
, which are inside the parentheses, by
.
So, you get the following result:

4y-6y+10
10y+10
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