1.

If Δ1=∣∣∣a−b−cd∣∣∣,Δ2=∣∣∣−211−2∣∣∣. Then which of the following is equal to the product Δ1⋅Δ2?

Answer»

If Δ1=abcd,Δ2=2112. Then which of the following is equal to the product Δ1Δ2?



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