Using suitable identity , evaluate 195 x 205
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Answers
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Step-by-step explanation:
195 x 205
= (200 - 5) (200 + 5)
( a + b) (a - b) = a² - b²
(200 - 5) (200 + 5) = 200² - 5²
= 40000 - 25
= 39975
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