KS4/iGCSE Expanding Brackets

KS4/iGCSE Expanding Brackets

Multiple Choice

 $Expand\ 5\left(x+3\right)$  

•  $5x+3$  

•  $5x+15$  

Multiple Choice

 $Expand\ 5x\left(x+6\right)$  

•  $5x^2+30x$  
  

•  $5x^2+\ 30$  
  

Multiple Choice

 $Expand\ and\ simplify\ \ \ 7\left(x+4\right)+6\left(x-9\right)$  

•  $13x-26$  

•  $13x+25$  

Multiple Choice

 $Expand\ and\ simplify\ \left(x-3\right)\left(x+7\right)$  

•  $x^2+4x-21$  

•  $x^2+10x-21$  

Poll

The answer to a) is:

• 12a + 13

• 12a + 10

Poll

The answer to f) is:

• $5x^2+5$

• $5x^2+5x$

Open Ended

Find an expression in terms of x for the area of the shaded region shown in slide 12.   You may seek the help of one of your peers.  Please show your working out in the space provided.

You have 5 minutes to come up with an expression.

Please go to MathsPad and make a start on the tasks that have been set. Your username and passwords for this website can be found on Classroom.