SOLUTION: On my worksheet, it has subtracting and addition.
like, (-6+12i)+(4-i)
I was explained the addition, now it is easy to me.
but my question is...should i do it differently if i
Algebra.Com
Question 181595: On my worksheet, it has subtracting and addition.
like, (-6+12i)+(4-i)
I was explained the addition, now it is easy to me.
but my question is...should i do it differently if it says subtract?
like...
(3-i)-(-4+9i)
do you do it differently than the addition one?
Found 2 solutions by solver91311, stanbon:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The simple answer is never subtract. Always add the additive inverse. So, instead of:
-(-4+9i))
Write:
+ \left(-(-4+9i)\right))
Use the distributive property:
+ (4-9i))
And now you can add just like before.
John
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
(-6+12i)+(4-i)
You cobine the Real Number parts and you cobine the imaginary number parts:
= (-6+4) + (12i - i)
= -2 + 11i
----------------
Ifyou were subtracting it would go like this:
(-6+12i)-(4-i)
= (-6-4)+(12i + i)
= -10 + 13i
================
Cheers
Stan H.
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