Answer:
9/20
Step-by-step explanation:
 
        
                    
             
        
        
        
STEP BY STEP EXPLANATION 
 (Mark brainliest pls)
Square root is 2 square + 4 square + 1 because 1 does not enable a square perhaps for negatives to be imputed, and we know 2 square will be 1 hence,
1 x 1 = 1 squared
2 x 2 = 4 squared
Perhaps for 1, you will have to use a formula equation and add tang maybe. Etc I don’t know if tang but u will also have to convert 1 to a decimal to find the square root of 1, 1 is an odd number so it will end up with remainder decimals or just do 1x1, etc.
Hence u 
(2 square + 4 square) + 1square?
It depends on addition or order of operations subtraction addition or you will might use multiply 
 if the subject is about multiply or Division so try and do it because i don’t know if I’m right 
..
REMEMBER 
PEMDAS
Please Excuse My Dear Aunt Sally 
Parentheses
Equations 
Multiplication
Division
Addition
Subtraction
ORDER OF OPERATIONS. 
 try and solve it hope this helps! 
Have a nice day
        
             
        
        
        
Answer:
third answer is correct
Step-by-step explanation:
hello,
we need to compute
5*(-1)+(-2)*(-1)=-5+2=-3
-6*(-1)+(2)*(-1)=6-2=4
so the correct answer is 
    -3
     4
hope this helps