Identities and Factorization Stage 2.13 Round 1

Factorize

2ab+6bc-7ad-21cd

Factorize

6pr-4ps-9qr+6qs

Factorize

2a-1-6ab+3b

 $ab^2-3a-2b^2+6=$  

•  $(a+2)(3-b^2)$  

•  $(a+2)(b^2-3)$  

•  $(a-2)(b^2+3)$  

•  $(a-2)(b^2-3)$  

 $25a^2-15ab-15ab+9b^2=$  

•  $(5a-3b)(3b-5a)$  

•  $(5a-3b)^2$  

•  $(5a-3b)(5a+3b)$  

•  $(5a+3ab)(5a+3b)$