About Lesson
17.1 Indices 指数
1.
If x + x = 4, find the value of x
+ x – 3.
若x + x = 4, 求 x
+ x – 3 的值
Answer:
52
2.
Solve the following simultaneous equations :
解下列联立方程式
5 . 125
= 1
9 = 81 . 27
Answer:
–2,
3.
Given that and
, find the values of x and y.
已知 和
, 求 x 和 y的值.
Answer:
1, 

4.
Given that . State c in terms of a and b.
已知. State c in terms of a and b.
Answer:
