Question
Find the value
4.2 x 4.2 - 1.9 x 1.9 2.3 x 6.1 = ?
Answer: Option B
- Given expression = (a2 - b2) (a + b)(a - b) = (a2 - b2) (a2 - b2) = 1
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- Given expression = (a2 - b2) (a + b)(a - b) = (a2 - b2) (a2 - b2) = 1
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