Simplifying Complex Numbers
This article will guide you through the process of simplifying the following complex number expression:
(-4 - i) + (-1 + 7i) + (6i)
Understanding Complex Numbers
Complex numbers are numbers that can be expressed in the form a + bi, where 'a' and 'b' are real numbers and 'i' is the imaginary unit, defined as the square root of -1.
Simplifying the Expression
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Group real and imaginary terms:
(-4 - i) + (-1 + 7i) + (6i) = (-4 - 1) + (-1 + 7 + 6)i
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Combine like terms:
= -5 + 12i
Result
Therefore, the simplified form of the expression (-4 - i) + (-1 + 7i) + (6i) is -5 + 12i.