Write 23 - 21 in polar form with between 0 and 2n. find z, 72 8. for z = 4 (cos 120° + i sin 120°) z= 2 (cos 30° + i sin 30") 9. find

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation:

1. perpendicular

2. parallel

3. perpendicular

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.