The length of a rectangle is three more than its width. Write a simplified expression of its perimeter.
4x+6
100
Draw a model, combine like terms and write a simplified expression.
2x^2- x^2+x
x^2+x
100
Look at picture on the board.
rectangle
width: 2x
length: x-1
6x-2
100
-2(3x^2+5x-2)
-6x^2-10x+4
200
(2x^2-3x-2)+(x^2+2x-4)
3x^2-1x-6
200
The length of a rectangle is 1 less than its width. Write a simplified expression of its perimeter.
4x-2
200
Draw a model, combine like terms and write a simplified expression.
x^2-2x+3x^2+2-5x
4x^2- 7x+2
200
Look at picture on the board.
rectangle
width: x+1
length: x-1
4x
200
3(x-2)+2x
5x-6
300
x-(2x-3)+(x+2)
5
300
The length of a rectangle is one more than twice its width. Write a simplified expression of its perimeter.
6x+2
300
Draw a model, combine like terms and write a simplified expression.
-x^2+2-x+3x^2-2x+4
2x^2-3x+6
300
Look at picture on the board.
Triangle
length: 2d+1
length: 4
length: d
3d+5
300
(2x+3)(x-1)
2x^2+x-3
400
3x-(2x+4)
x-4
400
The length of a rectangle is four less than three times its width. Write a simplified expression of its perimeter.
8x-8
400
Draw a model, combine like terms and write a simplified expression.
2x-3+(x-5)
3x-8
400
Look at picture on the board.
Triangle
length: w-2
length: 3w+1
length: 5w
9w-1
400
(x-1)(x-5)-(x^2+6x)
-12x+6
500
(2x^2-x-1)-(3x^2-x+3)
-x^2-4
500
The second side of a triangle is three times the first side. The third side is three more than twice the first side. Write a simplified expression of its perimeter.
6x+3
500
Draw a model, combine like terms and write a simplified expression.
x+5-(2x+3)
-x+2
500
Look at picture on the board.
rectangle
width: x-2
length: 2x+3