answered question 2/19/2010 Is Matrices Satisfies A2-b2=(a+b)(a-b)? If: A^2-b^2 =(a+b)(a-b) ====== Given: a=b => a^2=ab => a^2-b^2=ab-b^2 => (a+b)(a-b)=b(a-b) => (a+b)=b => a+a=a => 2a=a => 2=1
