Question

Which, if any, of the following statements are
true when a, b are real numbers?
A. For all positive a and b.
Which, if any, of the following statements are
true when a, b are real numbers?
A. For all positive a and b.
a − b
a + pb
= pa + pb .
B. For all positive a and b,
pa + b = pa + pb .
C. For all a and b,
q(a + b)2 = |a + b| .
1. A and B only
2. A only
3. B and C only
4. C only
5. all of them
6. B only
7. none of them