Question

factorise (a9-b9) and (a12+b12)​

Answer 1

Answer:

Step-by-step explanation:

a^12 - b^12  

USE FORMULA a^2 - b^2 = ( a+b) ( a-b)  

(a^6 + b^6) ( a^6 - b^6)  

( a^6 + b^6) ( a^3 + b^3) ( a^3 - b^3)  

USE FORMULAS a^3 + b^3 = ( a+b) ( a^2 -ab + b^2)  

AND a^3 - b^3 = ( a-b) ( a^2 + ab + b^2)  

(a^2 + b^2) ( a^4 -a^2b^2 + b^4) ( a+ b) (a^2 -ab+b^2) ( a-b) (a^2 +ab + b^2)  

hope it helps

Step-by-step explanation:

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