Question

Q34. Using Identities, Evaluate :-
i)
497x503
ii) (153)²– (147)²
​

Answer 1

Answer:

(150+3)^2 - (150-3)2

identity use (a+b)^2=a^2+2ab+b^2

(22500+2*150*3+9) - (22500-2*150*3+9)

(23409) - (21609)

1800

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