SOLUTION: f a,b,c and d are in H.P then ab+bc+cd equals A)3ad b)3ac c)3bd d)(a+b)(a-b)

Question 924501: f a,b,c and d are in H.P then ab+bc+cd equals
A)3ad
b)3ac
c)3bd
d)(a+b)(a-b)
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

let , , and
When you substitute and check what you get for the answer.

now go to answer options and check which one will give you
start with option A:
...so, option A is your answer
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