Re - introduction & Revision of Algebra

Identify which of the following are like terms?

• $2x^2$

• $3x$

• $-9x^2$

• $2x^3$

Identify which of the following are like terms?

• $x^2y$

• $y^2x$

• $-5xy$
  

• None of the above are like terms

Which one of the following is an example of an EXPRESSION in algebra?

• $2x\ =\ 10$

• $3x^2+5y\ -9$

• $3x^2+5y-9\ =\ 81$

Brackets mean... (select 2 answers)

• Nothing else. They are just for decoration

• Divide

• Do what's inside the brackets first (following BIMDAS)

• Multiply

 $x^2$  can also be written as...

•  $x\ +\ x$  

•  $2x$  

•  $x\left(x\right)$  

 $a^3$  can also be written as ... 
(Select 2 correct answers)

•  $3a$  

•  $a\ \times\ a\ \times a$  

•  $a\ +\ a\ +\ a$  

•  $a\left(a\right)\left(a\right)$  

Minus multiplied by a minus will give you....

• a plus (positive) answer

• a minus (negative) answer

Minus multiplied by a plus will give you....

• A plus (positive) answer

• A minus (negative) answer