I Need Help On Multiplying Fractions It’s 5th Grade
1 answer:
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She made her mistake at the first step. To simplify a radical, you would find two numbers that multiply by each other to get your original number (under the radical) and have one of the number be a perfect square.
Her reasoning is wrong because 10*10 is not
. Had she been correct, her answer should have been able to be squared to equal
In other words, she should have done
(We used 25 because 25 is a perfect square, 5*5=25).
:)
Her reasoning is wrong because 10*10 is not
In other words, she should have done
(We used 25 because 25 is a perfect square, 5*5=25).
:)
When we divide complex numbers we divide their magnitudes and subtract their angles, so this isn't all that difficult:
Answer:
That's probably what's called simplified polar form until you get to Euler's Formula. Since it's 30 degrees we can get a nice rectangular form: