5.1 Expressions

A coefficient is __________.

• the variable
• a constant
• an exponent
• the number that comes before the variable

A constant term has ______.

• no exponents

• no variables

• no numbers

• only a single number

Simplify by combining like terms:

-r -10r

• 11r

• -11r

• 9r

• -11

Simplify by combining like terms:

-6k + 7k

• k

• -k

• 12k

• -12k

Simplify by combining like terms:

7v + 2 + 12 + 2v

• 23

• 23v

• 9 + 14v

• 9v + 14

Simplify by combining like terms:

3x + 2x + 3y - 7y

• 5x + 10y

• 5x + 4y

• 5x - 4y

• 5x -10y

Simplify by combining like terms:

7t - 3t + t - 3t

• 2t

• 8t - 6t

• 14t

• Can't be simplified

• Can't be simplified

2a² – 8a²+ 5a³– 11a²

• - 5a² + 5a³
• -17a² + 5a³
• 5a^{2 -} 5a³

(4p³ – 2p² ) – (5p³ + 7p²) 

• - 9p² + 5p³
• - 9p² - p ³
• - 9p² + p ³