KS4/iGCSE - Factorising quadratics

KS4/iGCSE - Factorising Quadratics

 $factori\sin g\ quadratics\ where\ a\ne1$  

Multiple Select

 $Expand\ \ \left(x+3\right)\left(x-9\right)$  

•  $x^2-6x-27$  

•  $x^2-12x-27$  

Multiple Select

 $Expand\ \left(2x-3\right)\left(3x+9\right)$  

•  $6x^2+9x-27$  

•  $6x^2+27x-27$  

Multiple Select

 $Factorise\ \ \ x^2-15x+50$  

•  $\left(x-25\right)\left(x-2\right)$  

•  $\left(x-10\right)\left(x-5\right)$  

Multiple Select

 $Factorise\ \ \ x^2-9$  

•  $\left(x+3\right)\left(x+3\right)$  

•  $\left(x+3\right)\left(x-3\right)$  

Multiple Select

 $Expand\ \ \ \left(x-5\right)^2$  

•  $x^2+25$  

•  $x^2-10x+25$  

Practise Questions

Multiple Select

What is the answer to (a)?

• $\left(x+1\right)\left(x+6\right)$

• $2\left(x+1\right)\left(x+6\right)$

Multiple Select

What is the answer to (c)?

•  $\left(2x+5\right)\left(x+6\right)$ 

•  $\left(2x-3\right)\left(x+10\right)$ 

Multiple Select

What is the answer to (e)?

•  $3\left(x+7\right)\left(x+2\right)$ 

•  $\left(3x+21\right)\left(x+2\right)$ 

Practise Questions - solutions

Make a start on the worksheet on classroom.

STRETCH & CHALLENGE

Find an expression for perimeter

Multiple Select

STRETCH & CHALLENGE - Select your answer below:

• $4x+26$

• $2x+13$

Spot the Mistakes

How many mistakes can you find? Do these in your exercise book.

STRETCH & CHALLENGE

Find an expression for perimeter

Multiple Select

STRETCH & CHALLENGE - Select your answer below:

•  $4x+18$ 

•  $4x-18$ 

Go to classroom and open up the worksheet. Once you have worked through this you may start the tasks on MathsPad.

Multiple Select

STRETCH & CHALLENGE - Select your answer below:

•  $8x+16$ 

•  $4x+8$