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The standard form of a complex number is a+bi where a and b are real numbers and they can be anything, positive, negative, zero, integers, fractions or decimals.
In the standard form a is called the real part of the complex number and b is called the imaginary part of the complex number and where i2=−1 and i=√−1
A general example to help you recognize patterns and spot the information you're looking for
(2+i)(3+i)=5+5i 6+2i+3i+i2=5+5i 6+5i+i2=5+5iWe use them when we want to explore matrices.
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