Solution:
Suppose that
a = k + 9;
b = k−6; and
c = 4;
According to the question, a, b and c are in GP, then
Making use of the property of geometric mean, we get:
b2 = ac
Solution:
Suppose that
a = k + 9;
b = k−6; and
c = 4;
According to the question, a, b and c are in GP, then
Making use of the property of geometric mean, we get:
b2 = ac