Question

Evaluate by using suitable identity 9.3×8.7

Answer 1

Answer:

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Answer 2

9.3 × 8.7

(9 + 0.3) (9 - 0.3)

(9)² - (0.3)²

81 - 0.09

80.91

Identity used :- (a + b)(a - b) = a² - b²