Question

verify the identity (a-b)2=a2-2ab+b geometrical by taking​

Answer 1

${(a - b)}^{2} = (a -b )( a- b) \\ (a - b)(a - b) \\ = a( a- b) -b ( a- b) \\ = {a}^{2} - ab - ab + {b}^{2} \\ = {a}^{2} - 2ab + {b}^{2} \: \: \: \\ hence \: proved$