Question

2.Efectuati (5¹⁸)⁵:(5³¹)³​

Answer 1

Explicație pas cu pas:

${( {5}^{18} )}^{5} \div {( {5}^{31} )}^{3} = {5}^{18 \times 5} \div {5}^{31 \times 3} \\ = {5}^{90 - 93} = {5}^{ - 3} = \frac{1}{125} = 0.008$