Answer: x=4
Steps: (I am assuming your question has a typo in it and by "c" you meant "x")
The rational expression equals zero
only when the numerator equals 0 (the denominator cannot ever be zero):
and that happens only for x=4
45 7 14 absolute value true the distance from 0 and -5 -3 -2 0 and 9
I) 4
The number of sides=
The number of sides =8 sides
ii) 3
The number of sides=
The number of sides= 12