Evaluate
-49-7i
Real Part
-49
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-7i-7\left(-7\right)i^{2}
Multiply -7i times 1-7i.
-7i-7\left(-7\right)\left(-1\right)
By definition, i^{2} is -1.
-49-7i
Do the multiplications. Reorder the terms.
Re(-7i-7\left(-7\right)i^{2})
Multiply -7i times 1-7i.
Re(-7i-7\left(-7\right)\left(-1\right))
By definition, i^{2} is -1.
Re(-49-7i)
Do the multiplications in -7i-7\left(-7\right)\left(-1\right). Reorder the terms.
-49
The real part of -49-7i is -49.
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