Helene is finding the sum (9 + 10i) + (–8 + 11i). She rewrites the sum as (–8 + 11)i + (9 + 10)i. Which statement explains the property of addition that she made an error in using?
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Answer:
Step-by-step explanation:
Let A=9 + 10i
and B=–8 + 11i
so (9 + 10i) + (–8 + 11i)=A+B=9-8+10I+11I=1+21 I
(–8 + 11)i + (9+10i)=B+A=-8+9+11I+10I=1+21 i
WE FOUND THAT
A+B=B+A
This is known as rules of cumulative for addition of complex numbers
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