Checkpoint: Complex Expressions in the form ๐‘Ž+๐‘๐‘– Solution

Simplify. Then classify by all sets to which it belongs: real, pure imaginary, complex.

8i2ii2+โ€“25

16i28i3+5i16โ€“18โ€“i+5iโ€“16+8i+5iโ€“16+13i, complex

Note

Q: What is the conjugate for this expression?

A: โ€“16 โ€“ 13i

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