Factorisation by Common Factors

Factorise $4x+12$ fully.

•  $-4(-x+3)$  

•  $2(2x+6)$  

•  $-4(-x-3)$  

• I don't know 😓

Factorise $6x-9$  fully.

•  $3(3-2x)$  

•  $3(2x-3)$  

•  $-3(3+2x)$  

• I don't know 😓

Factorise $xy+cy$  fully.

•  $-y(-c+x)$  

•  $-y(-x+c)$  

•  $y(c+x)$  

• I don't know 😓

Factorise $xy-xz$  fully.

•  $-x(y+z)$  

•  $-x(y+z)$  

•  $x(-z+y)$  

• I don't know 😓

Factorise $5x+5y-5z$  fully.

•  $5(-x+y-z)$  

•  $-5(-x-y-z)$  

•  $-5(z-x-y)$  

• I don't know 😓

Factorise $20x-18y+14z$  fully.

•  $-2(10x-9y+7z)$  

•  $-2(-10x+9y+7z)$  

•  $-2(9y-7z-10x)$  

• I don't know 😓

Factorise $xy+xa+2xz$  fully.

•  $x(y+a-2z)$  

•  $-x(-2z-y-a)$  

•  $-x(y-a-2)$  

• I don't know 😓

Factorise $x(x+2)+8(x+2)$  fully. 

•  $(x+8)(x+2)$  

•  $x^2+10x+16$  

•  $(8+x)(2-x)$  

• I don't know 😓

Factorise $x(x-5)-3(x-5)$  fully. 

•  $(-3-x)(5-x)$  

•  $x^2-8x+15$  

•  $(x-5)(x-3)$  

• I don't know 😓

Factorise $8ab(x-5)-12b(x-5)$  fully. 

•  $-4b(2a-3)(5-x)$ 

•  $8abx-40ab+48bx$ 

•  $-4b(2a-3)(x-5)$ 

• I don't know 😓