Question

ПОМОГИЕ СРОЧНО!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

${25}^{2} \: \: \: {5}^{3} \: \: \: {521}^{0} \: \: \: {5}^{ - 1} \: \: \: {27}^{ - 2} \: \: \: { - 4}^{ - 2} \: \: \: { - 8}^{2}$