Question

algerba basic points​

Answer 1

Basic Algebra Formula

a2 – b2 = (a – b)(a + b)

(a+b)2 = a2 + 2ab + b. ...

a2 + b2 = (a – b)2 + 2ab.

(a – b)2 = a2 – 2ab + b. ...

(a + b + c)2 = a2 + b2 + c2 + 2ab + 2ac + 2bc.

(a – b – c)2 = a2 + b2 + c2 – 2ab – 2ac + 2bc.

(a + b)3 = a3 + 3a2b + 3ab2 + b. ...

(a – b)3 = a3 – 3a2b + 3ab2 – b.