It is simply X -12 as an expression in algebra
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It means that you take whatever value the variable "x" has, and subtract 12 from it.
Expression: x^2 -x -12 Completing the square: (x -0.5)^2 -12.25
The expression IS 5*4 - 8.
12 times d is the answer
It is an expression with a single variable, x.
This is an algebraic expression that can be written : (x + y) ÷ 12 or (x + y)/12. It can also be stated as : x/12 + y/12.