Adding
we get 
Option C 4 StartRoot 2 EndRoot i is correct.
Step-by-step explanation:
We need to find the sum of: 
Finding sum:

can be written as 
can be written as 
We know 18 = 2x3x3 = 2x3^2 so,


Adding like terms:

So, adding
we get 
Option C 4 StartRoot 2 EndRoot i is correct.
Keywords: Square root expressions
Learn more about Square root expressions at:
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For the example you gave of m+83, you would just write it out, like "m plus eighty three"
It is already in simplest form as it has a smaller total of the numerator than of the denominator. 7 2/3- 3 1/6= 4 1/2
Let the number be n. Then 3n = 34.5, and n = 34.5/3 = 11.5.
Half of this is 5.75, or 5 3/4.