А)
3³ +√25 * [√2*√18 - (5√6)² ] - 100 =
27 + 5 * [√36 - 150] - 100 =
27 + 5* [6-150] - 100 =
27 + 5 * (-144) - 100 =
27 - 720 - 100 = -793,
б)
[2(∧5) * (4√3)²] * 5/12 * (√ 6* √24 - 2) + 7² =
[32 * 48] * 5/12 * (√144 - 2) + 49 =
1536 * 5/12 * 10 + 49 =
6400 + 49 = 6449
( ∧ - знак степени)