Question

Using the formula (a-b)^2=(a^2-2ab+b^2), evaluate: i》(196)^2 ii》(689)^​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(200-4)² = 40000+16-1600=38416

(700-11)² = 49000+121-15400=474721