Helene is finding the sum open paren 9 plus 10 i close paren plus open paren negative 8 plus 11 i close paren She rewrites the sum as open paren negative 8 plus 11 close paren times i plus open paren 9 plus 10 close paren times i Which statement explains the property of addition that she made an error in using?
Answer
A
Helene incorrectly used the identity property by combining the real number and the coefficient of the imaginary part.
B
Helene incorrectly used the distributive property by combining the real number and the coefficient of the imaginary part.
C
Helene incorrectly used the associative property by changing the order of the two complex numbers.
D
Helene incorrectly used the commutative property by changing the order of the two complex numbers.