Hiding your face with your hands. Looking down at your feet, or the ground.
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Example: if somebody says something funny you EXPRESSION on your face will be smiling or happy.
learn it lol i get my answers from here numerical expression = lo variable expression = 02
2x+3
A numerical expression is defined as a combination of numbers and one or more operation symbols. An example is 5 + 7 - 1.
Yes, a mathematical expression can have no variables, but such an expression is usually not very useful. An example of a valid expression without variables is: 1+1=2