Basic algebra formulas that you can revise anytime and anywhere

FORMULAS FOR BEGINNER

(a+b) ^2= a^2+b^2+2ab

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

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

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

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

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

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

(a+b+c) ^2= a^2+b^2+c^2+2(ab+bc+ac)

(a-b-c) ^2= a^2+b^2+c^2-2(ab-bc+ac)

(a+b) ^3= a^3+b^3+3ab(a+b)

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

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

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

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

a^5+b^5= (a+b) (a^4-a^3b+a^2b^2-ab^3+b^4)

a^5-b^5= (a-b) (a^4+a^3b+a^2b^2+ab^3+b^4)