Answer:
C. 10-(4+2) = 4
Step-by-step explanation:
You have to follow the P.E.M.D.A.S., this is:
P:Parentheses first.
E:Exponent next.
M:Multiplication.
D:Division.
(Multiplication and Division is whichever come first, from left to right)
A: Addition.
S: Subtraction.
(Addition and Subtraction is whichever come first, from left to right)
We are going to analyze every option:
A. (10-4)+2
First we have to solve the parentheses
[tex](10-4)+2=\\(6)+2=8[/tex]
Then this expression is not equivalent to four.
B. 10-4+2
We have to solve from left to right. The subtraction come first in this case, then the addition.
[tex]10-4+2=\\6+2=8[/tex]
Then this expression is not equivalent to four.
C. 10-(4+2)
We have to solve the parentheses first, then the subtraction:
[tex]10-(4+2)=\\10-(6)=4[/tex]
This expression is equivalent to four.
D. (10 – 4 + 2)
In this case we have to solve from left to right, first the subtraction then the addition.
[tex](10-4+2)=\\(6+2)=(8)[/tex]
Then this expression is not equivalent to four.
