I never understood imaginary numbers, so why does 18i equal to -1?

8121 because

130,000 divided by 16 is 8121

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

you ignore the remainder, therefore the answer is y = x+2

step-by-step explanation:

you have to divide the denominator by the numerator. you can use synthetic division or long division.

[-5] .     1 .     7 .     11

x + 2 + 1/x+5