Online Self-Tests(E19)

• 
  

  1. If x– 4 = –6, find the value of x².

  ---

  (1 point)

  
  

  Answer:

  ---
• 
  

  2. Evaluate the expression below if x× (–3) = 15.

  2 × (x– 3)

  ---

  (1 point)

  
  

  Answer:

  ---
• 
  

  3. Evaluate the expression below if x= 27 and y= –36.

  x + y

  2

  ---

  (1 point)

  
  

  Answer:

  ---
• 
  

  4. Evaluate the expression below if x= –4 and y= –5.

  2x

  –

  4y

  ---

  (1 point)

  
  

  Answer:

  ---
• 
  

  5. Evaluate the expression below if x= 86 and y= –2.

  x÷ y

  ---

  (1 point)

  
  

  Answer:

  ---
• 
  

  6. If x× 8 = –72 and y= 6, find the value of (x+ y)².

  ---

  (1 point)

  
  

  Answer:

  ---