1.

Let a,b,c,d be in arithmetic progression with common difference λ. If ∣∣∣∣x+a−cx+bx+ax−1x+cx+bx−b+dx+dx+c∣∣∣∣=2, then value of λ2 is equal to

Answer» Let a,b,c,d be in arithmetic progression with common difference λ. If ∣∣
∣
∣
x+a−cx+bx+ax−1x+cx+bx−b+dx+dx+c∣∣
∣
∣
=2,
then value of λ2 is equal to


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