Question

(999)^2 -(995)^2. = ?

Answer 1

999+995 * 999-995

1994*4

7976

Answer 2

As this is in the Form of,

a^2-b^2

We know that,

=> a^2-b^2 = (a+b)(a-b)

=> (999)^2-(995)^2 = (999+995)(999-995) = 1994 x 4 = 7976




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