Respuesta :
Answer:
2x - 4
Step-by-step explanation:
2(3x + 6) = 6x + 12
2(-2x - 8) = -4x -16
6x + 12 - 4x - 16 = 2x - 4
Answer:
The perimeter of a rectangle with sides 3x + 6 and -2x - 8 will be:
[tex]P = 2x - 4[/tex]
Step-by-step explanation:
We know that the perimeter of a rectangle of length 'l' and width 'w' is given by the formula
- P = 2(length + width)
Given the sides of a rectangle
- 3x + 6
- -2x - 8
As the opposite sides of a rectangle are congruent.
Therefore, we conclude that the Perimeter of a rectangle can be determined using the formula
[tex]\:P\:=\:2\left(3x\:+\:6\:+\:\left(-2x\:-\:8\right)\right)[/tex]
[tex]=2\left(3x+6-2x-8\right)[/tex]
[tex]=2\left(x-2\right)[/tex]
[tex]=2x-4[/tex]
Therefore, the perimeter of a rectangle with sides 3x + 6 and -2x - 8 will be:
[tex]P = 2x - 4[/tex]