To fill the squares look for the one filled in column/row/diagonal and figure out its sum.
All other columns/rows/diagonals must be equal to that, so whenever there is a column/row/diagonal with a single missing value you can add the others up and calculate the missing value.
So you have to find those single missing value columns/rows/diagonals, fill them out and continue with the next one until the whole square is filled in.
 
        
        
        
Answer:
Step-by-step explanation:
1/3 * 2/1 = 2/3
 
        
                    
             
        
        
        
Note:  √a * √a  = a
           √a * √b  = √ab
(√2 + √10)²  =  (√2 + √10)(√2 + √10)
                    =  √2(√2 + √10) + √10(√2 + √10)
                    =   √2*√2 + √2*√10 + √10*√2 + √10*√10
                    =       2      + √20  + √20 + 10
                    =      (2 + 10) + (√20 + √20)
                    =        12 +  2√20
√20 = √(4 *5) = √4 * √5 = 2√5
                      =        12 +  2√20  = 12 + 2(2√5)
                     = 12 + 4√5
        
             
        
        
        
Step-by-step explanation:
f(x) = 3x² - 2x + 7
f(-2) = 3(-2)² -2(-2) + 7
 = 3(4) + 4 + 7
 = 23
 
        
             
        
        
        
Answer:
 and
 and 
Step-by-step explanation:
The equation of the isotope decay is:

14-Carbon has a half-life of 5568 years, the time constant of the isotope is:


The decay time is:
 (There is no a year 0 in chronology).
 (There is no a year 0 in chronology).

Lastly, the relative amount is estimated by direct substitution:




