Answer:
f(x) has two imaginary roots and one real root.
Step-by-step explanation:
Complex roots:
I a complex number
is a root of a polynomial, it's conjugate
is also a root.
One root of a third degree polynomial function f(x) is -5 + 2i.
This means that -5 - 2i is another root of the polynomial, and thus, 2 of the roots are complex.
Third degree, so it has three roots, which means that the third root is real(not possible to have a complex root without it's conjugate), and thus, the correct answer is:
f(x) has two imaginary roots and one real root.
Answer: 12+w
Step-by-step explanation:
Answer:
Step-by-step explanation:
radius of circle=4
diameter=4×2=8
width=2 half circles means diameter=8
length=2 diameters=2×8=16
area=16×8=128
4 half circles make two circles
area of two circles=2×π r^2=2×π×4²=32 π
reqd . area=128-32 π=32(4-π)