Question

using the identity (−)²=²−2+b² find (5−7)²​

Answer 1

$question = (5 - 7) {}^{2} \\ solution. \\ formula = (x - y) {}^{2} = {x}^{2} - 2xy + {y}^{2} . \\ (5 - 7) {}^{2} = {(5)}^{2} - 2(5)(7) + {(7)}^{2} \\ = 25 - 70 + 49 \\ = 74 - 70 \\ = 4 \: \: answer...$