Answer the following question. Each positive integer can be written as a sum or difference of distinct integer powers of 3 in only one way. For example, 1 = 3°, 6 = 32 – 31, and 87 = 34 + 32 – 31. Note that 6 = 31 + 31 is not valid since the powers of 3 used are not distinct. Write 2021 as a sum or difference of distinct integer powers of 3. (Remember: Your solution must show appropriate work or reasoning.)

Determine whether the following statement makes sense or does not make sense and explain your reasoning To add or subtract complex numbers means basically to combine like terms. Choose the correct answer below. O A. The statement does not make sense as the FOIL method is used when adding or subtracting complex numbers OB. The statement makes sense as adding or subtracting complex numbers includes grouping real and imaginary terms and then adding or subtracting the real parts and adding or subtracting the imaginary parts. OC. The statement does not make sense as adding or subtracting complex numbers includes finding the complex conjugate of the number OD. The statement makes sense as adding or subtracting complex numbers includes the use of the commutative property when adding real parts and adding the imaginary parts. empts 2 of 5 O of 5 O of 4 O of 4 O of 4

2.) Evaluate (3 - 4i)(2 + 5i) 10/60 + 20/-45