Combine Like Terms

What are like terms?

• Terms with different variables

• Terms with the same variables

How many terms are in the expression
 $3x-9+4+2x$  

•  $1$  

•  $2$  

•  $3$  

•  $4$  

 $x^2$  can be combined with $x$ . 

• True

• False

 $2xy$  can be combined with $3yx$ .

• True

• False

In the expression below, what are the  $y$  and $x$ called?
  $y+5x-10$ 

• coefficient 

• terms

• variables

• constant

In the expression below, what is the $3$ called?
  $3y+5$  

• term 

• variable 

• coefficient

• constant

In the expression below, what are the   $2x$ ,  $3y$ ,  $5x$ , and  $75$  called?

     $2x+3y+5x+75$ 

• coefficeient

• constant

• terms

• variables

Simplify.
 $3x+2x$  

•  $5x$  

•  $x$  

•  $6x$  

•  $5$  

Simplify.
 $2f+f$ 

•  $3f$  

•  $2f$  

•  $f$  

Simplify.
 $a+a+a+a$ 

•   $a+4$  

•   $4a$  

•   $a^4$  

•  $4a+4$