Question

Apply the identity (a + b) (a - b) = a2 - b2 to find the
value of the following:
(i) 99 x 101
(ii) 508 x 492
(iii) 188 x 212
(iv) 307 x 293​

Answer 1

Answer:

(99+101)*(99-101)

=99^2-101^2

=400

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