1) (2√10)^2 = 4 * 10 = 40√100 = 10Therefore, (2√10)^2 - √100 = 40 - 10 = 30
2) (√0.39)^2 = 0.392(√0.39)^2 = 2 * 0.39 = 0.78Therefore, 0.5 + 2(√0.39)^2 = 0.5 + 0.78 = 1.28
1) (2√10)^2 = 4 * 10 = 40
√100 = 10
Therefore, (2√10)^2 - √100 = 40 - 10 = 30
2) (√0.39)^2 = 0.39
2(√0.39)^2 = 2 * 0.39 = 0.78
Therefore, 0.5 + 2(√0.39)^2 = 0.5 + 0.78 = 1.28