1a)
7 ≤ x ≤ 10
49 ≤ x² ≤ 100
1b)
-3 ≤ x ≤ -2
4 ≤ x² ≤ 9
1c)
-1 ≤ x ≤ 1
1 ≤ x² ≤ 1
2a)
2 ≤ x ≤ 3
4 ≤ 2x ≤ 6
1 ≤ 2x-3 ≤ 3
1 ≤ (2x-3)² ≤ 9
5 ≤ 5(2x-3)² ≤45
4 ≤ 5(2x-3)²-1 ≤ 44
2b)
0 ≤ x ≤ 1
0 ≤ 2x ≤ 12
-3 ≤ 2x-3 ≤ 9
9 ≤ (2x-3)& ≤ 81
45 ≤ 5(2x-3)² ≤ 405
44 ≤ 5(2x-3)²-1 ≤ 404
2c)
1 ≤ x ≤ 2
2 ≤ 2x ≤ 4
-1 ≤ 2x-3 ≤ 1
1 ≤ (2x-3)² ≤ 1
5 ≤ 5(2x-3)² ≤ 5
4 ≤ 5(2x-3)²-1 ≤ 4