Answer:
The correct options are 1, 2, 4 and 6.
Step-by-step explanation:
The given expression is

To subtract like term subtract like terms, subtract the coefficients, not the variables.
Therefore option 1 is correct.
Like terms are terms that contain the same variable, raised to the same power. For example: 3xy and 5xy, 4x² and 3x².
Therefore, option 2 is correct.
Using distributive property we get


Only combine terms which contain the same variable.
Therefore option 4 is correct.


The simplified expression is -4x-3y+3z. Therefore option 6 is correct.
Answer:
C ,D, E
Step-by-step explanation:
....................
Answer:
C
Step-by-step explanation:
The graph can take any value of X
-3[ x^2 - 2x + 1] + 4
-3x^2 +6x -3 + 4
-3x^2 + 6x + 1
x can take any value of real numbers and there would be a solution
Hence all real numbers is the domain.
Answer: sqrt (-121) is 11i
Step-by-step explanation:
I don’t understand the question so I answer in two ways