In an Argand diagram, the point P represents the
complex number z, where z = x + iy. Given that
z + 2 = λi(z + 8), where λ is a real parameter,
find the Cartesian equation of the locus of P as λ
varies. If also z = μ(4 + 3i), where λ is real,
prove that there is only one possible position for
P

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

what are you trying find out?

step-by-step explanation:

yes.. it's proven to be 36.