Answer:
8). x = 9
9). x = 5
Step-by-step explanation:
Note that if you take a point outside a circle and take the two tangents, they are symmetrical. And if they're symmetrical, their lengths are equal!
8).
5x - 1 = 3x + 17
2x - 1 = 17
2x = 18
x = 9
9).
-4 + 4x = 3x + 1
-4 + x = 1
x = 5
