a+bi=0 only when a=0 and b=0 right?

I was doing an SAT math level 1 problem that started with:

y=7-x+(x+2)i

so I changed it to:

0 = 7-x-y + (x+2)i

So b=0 --> x=-2 --> y=9 , right?

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- Aug 26th 2011, 11:03 AM #1

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- Aug 26th 2011, 11:07 AM #2
## Re: a+bi=0 only when a=0 and b=0 right?