HELP PLS I am failing!! Will mark brainiest show your work!

Step-by-step explanation:

1.)

7 - 3i - 6 - 4i

Combine like terms

1 - 7i

Cant do anything else

2.)

5 + 4i - 9 - i

Combine like terms

- 4 + 3i

Can't do anything else

3.)

5i - 3 - 7 + 2i

7i - 10

Can't do anything else

4.)

9i + 3 - 4 + 3i

12i - 1

Cant do anything else

Hope this helped!

Have a day!

1.  is 7-3i-(6-4i)= 1+i

2.  is 5 + (4 * i) - (9 - i) = -4+5i

3.  is  (5 * i) - 3 - (7 + (2 * i)) =  -10+3i

4.  is  (9 * i) + 3 - (4 + (3 * i)) = -1+6i

trust me guys Im in 11 grade i did this all ready

Step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

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step-by-step explanation: