IF YOU SOLVE I WILL BE YOUR BEST FRIEND I SWEAR. ALSO WILL AWARD THE BRAINLIEST THING. PLEASE. I NEED THESE GRADES SO I WONT BE A DISSAPOINTMENT TO MY MY MOM!

see below

Step-by-step explanation:

x⁵ - 8x⁴ + 22x³ - 26x² + 21x - 18 = 0

x = 2,  x = ± i,   x=3  with multiplicity 2

x⁴ - 5x³ + 7x² - 5x + 6 = 0

x = 2,   x=3,   x = ± i

-1 + 4i    =  4 + i

    i

x³ - 26x² + 21x - 18 = 0

x = ± 2i,   x = 3/2

(1 + i) (-3 - 4i)

= 1 - 7i

6.

(-5 + 2i) + (3 - 6i)

= -2 -4i

7.

x⁴ + 5x² + 4 = 0

x = ± i ,     x = ± 2i

8.

(7 - i) - (-5 + 6i)

= 12 - 7i

9.

(4 - i) (4 + i)

= 17

10.

(3 + 8i) (4 - 3i)

= 36 + 23i

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step-by-step explanation: