Question

solve this problem with solution please

Answer 1

${305}^{2} = {(300 + 5) }^{2} \\ \: \: \: \: \: \: \: \: \: \: = {300}^{2} + 2 \times 300 \times 5 + {5}^{2} \\ \: \: \: \: \: \: \: \: \: \: = 90000 + 3000 + 25 \\ \: \: \: \: \: \: \: \: \: \: = 93025$