Find the value of 98×102 using a2-b2
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Hey there! ☺☻☺
Given,
98 × 102
We can write them as (100-2) × (100+2)
We know,
(a-b) (a+b) = a² - b²
⇒ (100 - 2) (100 + 2)
⇒ (100)² - 2²
⇒ 10000 - 4
⇒ 9996 (←Answer)
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