Question

помогите пожалуйста

Answer 1

${8}^{ - 4} times {16}^{5} = {( {2}^{3}) }^{ - 4} times {( {2}^{4} )}^{5} = {2}^{3 times ( - 4)} times {2}^{4 times 5} = {2}^{ - 12} times {2}^{20} = {2}^{ - 12 + 20} = {2}^{8} = 256$