Which properties are used to add these complex numbers? choose all that apply. (5+2i)+(6+7i)=(5+6)+(2i+7i)=11+9i A. distributive property
B. associative property
C. commutative property
D. none of the above

B. associative property

C. commutative property

A complex number is defined by the form:

Here we use:

B. associative property

C. commutative property

Let's rewrite our expressions as:

Step 1.

Step 2.

Step 3.

So in step 2 we apply those properties because we make the commutation of 6 and 2i and perform the association using parentheses.

the answer is 1/4

step-by-step explanation:

do you have a picture of the table