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Question
Evaluate the following, using suitable identity
297 × 303
Solution
297 × 303 = (300 – 3)(300 + 3)
Taking a = 300 and b = 3, then
(a + b)(a – b) = a2 – b2 becomes
(300 + 3)(300 – 3) = 3002 – 32
303 × 297 = 90000 – 9
297 × 303 = 89,991
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