Question

Using the identity (a-b) square = (a square - 2ab + b square), Evaluate 699 square

Answer 1

Step-by-step explanation:

(a-b)^2 = a square+ b square - 2 ab

(700-1)^2= 700 square + 1 square - 2 (700)(1)

490000 +1 - 1400

490001 - 1400

488601

Answer:

488601

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