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answer fast points please give a long answer note recipe answer with method I want please give answer who was sure that I know correct answer with a long method
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Answer: There is actually a misprinting in your book; I also had the same problem. The correct question is: 10.5 * 9.5. Ans: (10)² - (0.5)²
Step-by-step explanation:
10.5 * 9.5 is of the form (a + b)(a - b) = a² - b²
i.e., (10 + 0.5)(10 - 0.5)
where, a = 10 and b = 0.5
= (10)² - (0.5)² ans.
Hope it helps you.
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GIVEN =1.05×9.5
SEE THE ATTACHMENT
10.5×9.5
10.5×9.5
=(10+0.5)(10−0.5)
Using,(a 2 −b 2 )=(a+b)(a−b)
=(10) 2 −(0.5) 2 =100−0.25=99.75