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Handle the real parts and the imaginary parts separately.
Don't try to borrow ("regroup") or carry. It can't be done.
To find the real part of the sum, add the real parts.
To find the real part of the difference, subtract the real parts.
To find the imaginary part of the sum, add the imaginary parts.
To find the imaginary part of the difference, subtract the imaginary parts.
ExampleSuppose you want to add the following complex numbers: 3-2i and -7-6i.The real part is 3-7, which is -4.
The imaginary part is -2i+(-6i), which is -8i (because -2+(-6)=-8).
So the answer is -4-8i.
It's just like adding expressionsYou've probably done things like (4-7x) + (-6+x). In that case, just pretend i is x when you're doing these problems. (It works for multiplying too, except that when you get an i2 term you should substitute i2 = -1 )
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How do you know whether you should add or subtract the value of the two numbers?
By the signs: 2+2(Add) 2-2(Subtract) +=add -=subtract
When can you add or subtract mixed numbers?
You can always do that.
How do you add numbers with different signs?
You add all the numbers with + signs and subtract all that have minus signs.
How do you add and subtract mixed numbers with unlike denominators?
just change the fration with the smallest denominator and add or subtract the way you always do.
When adding numbers with exponents do you add or subtract the exponents?
you do not do anything when you add numbers with exponents. you just figure out the answer. it is only if you multiply numbers with exponents, where you add the exponents..
