139.
1) х^2 + 5
а) при х = 1
1^2 + 5 = 1 + 5 = 6
б) при х = 10
10^2 + 5 = 100 + 5 = 105
2) 3b^2 - 11
а) при b = 5
3 × 5^2 - 11 = 3 × 25 - 11 = 75 - 11 = 64
б) при b = 100
3 × 100^2 - 11 = 3 × 10 000 - 11 = 30 000 - 11 = 29 989
140.
1) 2^3 + 4^3 =8^1 + 8^2 = 8 + 64 = 72
2) 7^3 - 7^2 = 343 - 49 = 294
3) 6^3 : 3^2 + 2^5 = 2^3 × (3^3 : 3^2) + 2^5 = 2^3 × 3^(3-2) + 2^5 = 2^3 × 3^1 + 2^5 = 8 × 3 + 2^5 = 24 + 4^2 × 2 = 24 + 16 × 2 = 24 + 32 = 56