(-3 - 2i) x (-4+ 2i) if you simplify using FOIL you will get 16+2i
The answer is 4^2=4 x 4= 16
Answer:
1.) 25
2.)81
3.)49
Step-by-step explanation:
(I recommend getting a Texas instruments TI-84 you can just plug in the numbers and it does it for you :)
Since it is x^3 cubed it has 3 maximum roots
by the zero multiplication property of function
if you plug find a root then you can deduce it is a factor in other words if f(x)=(x-a)(x-b)
then f(a)=0 and f(b)=0
so
f(2)=8+8-32-32= -48 therefore it is not a factor
f(-2)=-8+8+32-32=0 hence it is a factor
f(4)=64+32-64-32=0 it is a factor
f(-4)=-64+32+64-32=0 it is a factor
f(-6) it is not a factor via the fundmental therom of algebra
f(x)=(x+2)(x-4)(x+4)
=(x^2-16)(x+2)=x^3+2x^2-16x-32 which checks our work
