Question

By Using a suitable identity, evaluate the no.....
97 x 102
Use the formulae
(X+a) ( x+b)= x square + (a+b)x +ab
Please tell me the right ans

Answer 1

Hey!!

(100-3) (100+2) = (100)^2 + (-3+2)(100) + (-3*2).

By identity (x+a) (x+b) = x^2+ (a+b)x + (ab)

=9894

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