Law of indices

Some law of indices- and algebra equations. am X an = am+n am ÷ an = am-n (am)n =amn a0 = 1 (a+b)2=a2+2ab+b2 (a-b)2=a2-2ab+b2 a2  - b2 =(a+b)(a-b) a2 + b2 = (a+b)2 – 2ab or (a – b)2 +2ab (a+b)2 +(a-b)2 =2(a2+b2 ) (a+b)2- (a-b)2 =4ab (a+b)3 =a3 +3a2 b+3ab2 +b3 (a-b)3 =a3 -3a2 b+3ab2 -b3 a3 +b3=(a+b)3 -3ab(a+b) also a3 +b3=(a+b)(a2 –ab+b2 ) a3 -b3=(a-b)3 +3ab(a-b) also a3 -b3=(a-b) (a2 +ab+b2 ) (a+b+c)2 =a2 +b2+c2 +2ab+2bc+2ca a3 +b3+c3-3abc=(a+b+c)( a2 +b2+c2 –ab-bc-ca)