2x^2 - 1
Let's call "a number" x. Twice that number would be 2x, and then add 27, so the expression would be 2x + 27.
If the number is x then the expression is: 2x+8
eight less than twice a number
The corresponding expression would be 2x - 6 = 4.
Let the number be x and so the expression is 4x -3
2n
If the number is represented by variable x, then twice the number is represented by 2x.
2b
2z
|5n - 2n|
pnis
2x + 11
2x
If ' x ' is your number, then the quotient is 2x/6.
Let's call "a number" x. Twice that number would be 2x, and then add 27, so the expression would be 2x + 27.
If the number is x then the expression is: 2x+8
The expression is: 2x-16