For homework, Crystal must simplify the expression
Show Crystal the steps she could take to get
What steps do you think Crystal took to get
as a result?
What does she need to consider to avoid making this mistake in the future?
She needs to convert to imaginary form before completing operations.
Crystal’s example means that
is not always true for real numbers and . What restriction needs to be placed on the numbers and ?
They must be non-negative real numbers.