-1 x (-1) = -1 x (-1) x (-1) =
-1 x (-1) x (-1) x (-1) =
-1 x (-1) x (-1) x (-1) x (-1) =
-1 x (-1) x (-1) x (-1) x (-1) x (-1) =
-1 x (-1) x (-1) x (-1) x (-1) x (-1) x (-1) =

1

-1

1

-1

it continues like this

Step-by-step explanation:

if the the negative is multiplied by negative = positive

negative × positive = negative

for example

-1 x (-1) x (-1) = 1× (-1) = -1

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)

part a: 1.08

part b: 27.59