Evaluate using identities: 87^2 – InterviewSolution

1.

Evaluate using identities: 87^2

Answer»

Answer:

Step-by-step EXPLANATION:

Identity » (a-b)² = a²-2ab+b²

(87)²

= (100-13)²

= (100)² - 2(100)(13) + (13)²

= 10000 - 2600 + 169

= 7569

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