Question

evalute 92 ×91 using identify​

Answer 1

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Answer 2

Answer:

92×91=8372

Step-by-step explanation:

92×91 = (100-8)(100-9)

          = (100²-800-900+72)    Using following identity x²+(a-b)x-ab

          = (10000-1700+72)

          = 8372

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