Please answer these questions and have the work shown:
2 answers:
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Answer:
Explanation:
A circle whose center is and radius
, has equation:
The center of circle is given as origin , therefore:
This circle passes , then the radius of circle is the distance
between origin
and
=>
Substitute ,
, and
back into original equation:
or
Hope this helps!
:)
First of all, you can simplify the 4 at the numerator and the 14 at the denominator (they're both multiple of 2):
Now, rationalize a denominator means that you have to get rid of the square root, in order to have an integer denominator.
To do so, remember that you can always multiply any number by 1 without changing its value, and you can always think of 1 as a fraction where numerator and denominator are equal: