Distributive law and quadratic identities
Summary
- a(b+c)=ab+aca(b+c)=ab+ac (Distrib utive law)
- (a+b)c=ac+bc(a+b)c=ac+bc
- (a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d)=ac+ad+bc+bd
- (a+b)(a−b)=a2−b2(a+b)(a−b)=a2−b2
- (a+b)2=a2+2ab+b2(a+b)2=a2+2ab+b2
- (a−b)2=a2−2ab+b2(a−b)2=a2−2ab+b2
- Factorization : decompose an expression into a product of expressions