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MATH 2B-FACTORING

 
 
LiangKai Ho的头像
MATH 2B-FACTORING
LiangKai Ho - 2020年11月30日 Monday 20:13
 

Hello, 


I need help to explain about the problem 1.27,  I don't know how to factor it, please advise, thank you!

 
ProfessorAreteem的头像
Re: MATH 2B-FACTORING
ProfessorAreteem - 2020年12月2日 Wednesday 12:18
 

This is for Math Challenge II-B Algebra, correct? Please remember to let us know from which course you need help.

Try adding and subtracting $ab$: $$a^3b - ab^3 + a^2 + b^2 + 1 = a^3b - ab^3 + a^2 -ab + b^2 + ab + 1$$