Algebraic Expressions

Rewrite the expression by combining like terms.
2x² + 10x + 5x² + 25x

• 3x² + 3xy + 6y
• 6y² + 2xy + 2x
• 7x² + 35x
• 3x² + 6xy + y

Which expression is equivalent to
v + v + v + v + v?

• 5v
• v⁵
• v + 5
• v5

Which expression is equivalent to:
d + d + d + 3 + 2

• 3d + 5
• d + 5
• 2d + 7
• 3d + 4

Rewrite the expression by combining like terms.
4x² – 2x² + 2y + 6y² – y + x²

• 3x² + 3xy + 6y
• 6y² + 2xy + 2x
• 7x² + 35x
• 3x² + 7y² + y

Simplify by combining like terms:

3x-5x

• 2x

• 8x

• -2x

• 15x²

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

2r + 2 + 5r - 2 + r 

• 8r 
• 8r - 4 
• 12r 
• 7r + 4 + r 

Simplify: x + 3x + 6x + x

• 9x

• 11x

• 2x + 9x

• Can't be simplified

Simplify:  $7y^2\ -5y\ +\ 9y\ -\ 5y^2$  

•  $6y^{2\ }$  

•  $2y^{2\ }+\ 4y\$  

•  $12y^{2\ }+\ 14y$  

• Can't be simplified